I was lucky enough to train with Tony Cecchine for about a year back in 00-01. I learned a lot while I was there, but I can't say there was much carry over to where I train now, since I had to take about 3 years off due to work and finances. But I still have a few core moves I learned while there that work good for me. The biggest carryover was my ground control/pinning, which is still pretty good.
People will bash Tony for his involvement in Catch, as well as his background(which some have called into question--usually right before offering their own Catch products for sale). I don't know how or when he learned Catch, since I wasn't there. If he was faking it, then he was a damn good faker. I am not claiming to be able to spot a fake a mile away or anything of that sort, I am just saying the few times he was able to roll with us(he had/has a bad back and other health issues), he was light years ahead of any of us.