Think I read the same... You might have a search over on vsplanet.com at the bbs. They are somehow more machine-oriented... At least for Roland/Boss... I assume that here aren't too many Roland/Boss users (or they don't dare to post as someone else might flame them for having such an amateur machine ;-)
I read about guys who seemed to have done 8->2 bounce on a vs880EX in one pass and it turned out to be a miracle. I'd be VERY cautious in taking an investment on ONE opinion if everyone else says that it's impossible...