I haven't had a chance to shoot seriously with this yet, but so far I'm a believer. Took a couple of quick test shots with this lens while walking around campus tonight.
Lens is basically ridiculously sharp even at f1.4. Most fast primes mask DoF miscalculations because they're so soft wide open. Not the case with the 35L. It's sharpness stopped down will absolutely expose bad technique. It's at least as sharp as the 85L stopped down, which again, says a lot.
Again, crazy sharp stopped down, but the bokeh seems a bit 'busy'...at least when compared to the dreaminess of the 50L.
I shot quite a few shots throughout the day in various shooting conditions....inside my car, office, outside, etc etc. Did not encounter a single focus issue. I did run into instances where the focus would hunt for a bit, but totally tolerable, IMO.