I have a 09 314 with the standard Float R fitted. I have to say I love the bike, I dont notice too much bob when pedalling, so its never really an issue, and to be honest I am very much a set and forget sort of rider (I rarely bother with locking out my forks or faffing with stuff mid ride to be honest) That being said, a mate of mine just got a 2010 carbon 714 with the RP2 shock with propedal on. And it does props up in its travel better for climbing than mine so he can get in a better climbing position, but would I say it really bothers me ? not so much really ! I run mine at the upper end of the sag range (nearer to 20-25% sag as opposed to 30%)
Its a great bike, for battering over silly stuff with a cavalier attitude that otherwise you would be far more cautious on a different machine.
I have been through a couple of lower shock eyelet bushing since having it a year ago, but I have rode it through this crappy winter just gone.