Dears Vesavekkuli and ronjazz!
Thanks a lot for your comments and your warm words and support and interest to this subject.
I receive other requests to continue this and I'll try

This theme about standing/moving position is only part of my guitar playing conception.
It is integral and important part of it but not the essence of my guitar philosophy.
The essence is :
1. Freedom of movement for body, hands and fingers of guitarist (as much as it is possible and achievable in the real world)
2. Freedom from pain, as it is unfortunately very common feeling associated with playing complicated and physically and mentally demanding music long time ...
3. Freedom from tiredness, exhausting through free hands but less movement and less power as possible
4. Freedom of mind which is lot more easily possible when you don't need to overcome pain and when you feel free and relaxed and open and not tired and concerned and not trying to win something or to be perfect of perfect.
I listened and read Thomas Offerman and he has some ideas with those I would totally agree:
1.Certainly he is a great example that you could play complicated and virtuoso music in standing/moving position.
2. I love this statement from his "Extracts „Die Integrative Gitarrentechnik“:
Thomas Offerman : "The intention of this thesis is to contribute objectivity to the discussion on what is “The Right Guitar Technique” by comparing the pure adoption, without due consideration, of traditional dogma and technical concepts with a framework derived from a knowledge-base drawing on anatomic and physical factors. This new framework is not designed to provide the reader with restricting advice, but to make allowance for his or her specific anatomic preconditions and aesthetic conceptions.
After studying this thesis and the accompanying technical exercises, the reader should be able to play this wonderful instrument, the guitar, joyfully and free of any health risks and according to his personal taste and preferences. Although for non-guitarists this postulation might sound obvious, experience shows that even internationally acclaimed guitarists do sometimes suffer from pain in their hands, arms or back as well as from even focal dystonia.
Being able to play the guitar free from pain or health risks directly affects the freedom and ability normally associated with artistic expression. Traditionally, guitar technique was accompanied by numerous restricting directives. However, this thesis which is based on knowledge, aims to oppose traditional perspectives by presenting the concept that, in essence, we make mistakes only when we play our instrument without conscious and mindful awareness. Experimenting with movement, even with large movement, is the best way to reach the goal."
"Being able to play the guitar free from pain or health risks directly affects the freedom and ability normally associated with artistic expression. Traditionally, guitar technique was accompanied by numerous restricting directives. However, this thesis which is based on knowledge, aims to oppose traditional perspectives by presenting the concept that, in essence, we make mistakes only when we play our instrument without conscious and mindful awareness. Experimenting with movement, even with large movement, is the best way to reach the goal."
Andrei Krylov: Great statements, great description!
But his, Thomas Offerman, next statement is a contradiction to that:
"Stating that pre-tension is a precondition for any movement leads to the conclusion that the demand for “relaxed instrumental playing” as such is paradoxical. Only the acceptance of pre-tensing and pre-adjusting forces enable the player to play an instrument free from superfluous tension, and with the highest precision in space and time so necessary for making music."
Andrei Krylov: Why does one need to "pre-tension" for freedom of movement?
Tension is opposite to freedom... Pre - tension is twice opposite...
pre-tension for certain type of apoyando is good for fullness of sound, but if you use pre-tension for all kind of techniques, then how could you relax? How could you remove tension from body and mind, therefore nerves and tendants? Pre-tension as a general principle means to double control on the whole system therefore to double stress on the system (tendants, nerves, muscles etc.) ... and then ... so unfortunately we came back to his starting words -"Traditionally, guitar technique was accompanied by numerous restricting directives."
Therefore I'm happy to see that we are in agreement with him about standing /moving , and also about principles how to look on guitar technique in general, but we disagree on some certain details and ways to achieve similar goals.
I'd better speak by music...Please listen Andrei Krylov at CDbaby, iTunes, Spotify, Amazon etc. Thanks!