I would never train with a teacher (exception being if they are ancient) that did not spar with his students. Something wrong with that IMO. Unfortunately 95% of the CMA world falls into this problem!
I have had several teachers who would not touch hands with students for various reasons. Overwhelming majority talked a big talk, but could not walk for ****! One of my biggest gripes with CMA!
To this day Hu Laoshi touches hands with me EVERY time I see him! He is 60+ years old, and over 100#'s smaller than me! No excuse not to touch hands with students!
My attitude stands with BJJ. I tried several schools in the area and noticed that not only did the head instructor often not teach the basic classes, but purple and brown belts claimed they never rolled with him
ABSURD!!!!!! Apparently they were comfortable taking peoples money just because they were Brazilian! My instructor rolls with me every class!
Just my 2 cents,
Jake