well let me tell you that it might be hard to impress you since your favorite lenses are the 24 and 35 1.4L's...but i'll give my take anyway.
Look: looks great with hood, you can tell it has a good share of glass on it.
feel: weight is great, balances on a 20d/30d/5d w/grip very well. focusing ring is quite smooth, but not quite like an L. same as the overall build...good, but if you're used to lenses like the 35 1.4, you'll be able to tell a difference.
Autofocus: the focus is lightning fast and quite accurate on my copy. in low low light it might search a little bit but i've used a few L's that did the same thing. the AF is practicaly silent.
Sharpness: very good. at f/1.8-f/2 it's easily 'sharp enough', from f/2.2 - f/2.8 it's very sharp, and from f/4 on it's as sharp as a tack. it's probably safer to say that from f/2.2 up it's very very sharp, but there's something about f2.8-f4 that sings on the 85. I would consider that the sweet spot. the only reason i hesitate to use it at lower than f/2.2 is the ultra-shallow DoF (bad for moving subjects).
Color: great, processes well too.
CA: great. there is a tiny bit of reddish CA at apertures smaller than f2.8, but i rarely run into that and it's never a problem.
vignetting: not a big deal anyway since i know you like to vignette your pictures

(it's fine in this lens btw)
distortion: none really.
bokeh: gorgeous, but not quite as smooth as the 85L or 135L.
that's about as much info as i can give without overdoing it...it's a terrific little lens, surpisingly good for the price. here are some sample photos from it (i'm sure you've seen some of these before):
hope that helps!