Not really. I have a Citibike key (I did start this thread after all), and I ride a converted MTB as commuter as well as a carbon road bike. I find the Citibikers to be a bit of a nuisance on the streets, but not necessarily their fault. The bikes are clunky, don't maneuver very well and are a bit wobbly, and of course are slow. I always approach them from behind with trepidation as I don't want to startle them by yelling "on your left" as that'll start them wobbling.

But yet I ride them myself, and when I do I just accept that they'll ride slow.