The jetting on the RB carb has received LOTS of attention over the past couple years. It's much closer to what works now than it was at the beginning.
I don't ride a 220...but would expect the result to be BETTER than on my 200. Primarily 'cuz the carb on the 220 is so puny (33mm).
I'm sure you've read plenty of posts from riders that have it, so I'm not sure what "just wondering......... if everyone sees it as a good investment" means. Anyone that DOESN'T like it (I know of noone) just hasn't gone to the trouble of jetting it properly. With what's known about it now, it's pretty much a snap. Ron I'm sure sends the current 'right setup', so there is little to no 'trouble' in jetting it. Ask him what it is. Also, if you don't like what 'it is' he'll send you something else.
Some things just work. This is one of 'em.