The Incarna “scene” is primarily a few groups of gamers in the Seattle area.
FoundedWorking with Incarna Materials: Although formal play testing for the core game has ended, updates and ideas are being formulated and Developed all the time. These are usually passed through the Google Group for discussion among GM's and developers. Business Opportunities are available for those wishing to use the materials under standard terms.
Role vs. Roll Play
Honestly, this is very subjective and the source of many arguments. We will just say that Incarna is supposed to stress and promote Role as opposed to Roll. Its tuned to the sensibilities of the gamers in the scene here, and you may not get the same effect.
See also “The Role of The Dice: Middle Ground” 5th Ed. DMG p.236.