I've gotten some really good results out of this lens. I've also got some not so good results. I always preferred the size and focal length of the ef35/2 for the 20D and 1D2. Unfortunately, canon hasn't updated that lens with USM (I've gotten quite used to using the ability to manual focus without switching the lens to MF). So, instead of spending serious $$$ on the ef35/1.4L, I got the 28/1.8.
To my eyes, it's not as good optically as the 35/2, but it's quieter and lends itself to a faster workflow (for me, anyway). I tend to like the results more when used on the 20D rather than the 1D2 (corner sharpness). I wouldn't recommend this lens to everybody, but in reality, good results are possible. And sometimes (more often for some), getting the shot counts more than the technical quality of the shot.
Another negative (about all non-L canon lenses, actually), the lens hood (EW-63 II) is not included and cost me an extra $24.