My one reservation about the use of a Gi is how collar chokes might change the dynamics of Ringen.
On the other hand it wouldn't be hard to train without allowing chokes (they weren't common in the figthbooks anyway) or (the solution ARMA Portland seems to be gravitating toward) put a rondel on everyone's belt & just stab the guy while his arms are engaged applying the choke.
If I may quote Di Grassi (pg 51) here: "A man may after another manner take advantage of the cloak which the enemy wears, by taking with one hand both sides of it, near the collar: which both sides being strongly held, cause the cloak to be a ginne or snare about the enemy's neck, the which ginne being violently held, and plucked with one hand, he may so forcibly strike him with the other on the face or visage, that he will go near hand to break his neck."
Try that with a t-shirt. Sounds a lot like what EMA or BJJ might call a....gi choke.
