I ordered my copy of the Tokina AT-X 116 PRO DX, 11-16mm, f/2.8 for Canon on digitec.ch – one of Switzerland's leading online shops for camera gear – for 593 Swiss francs (~620$) and picked it up at the local post office just a few days later. It is a bit bigger and heavier than I'd expected it to be, but it seems to be built really solid, looks like great quality (just like mentioned in most reviews). And still it's not that heavy.
Anyway, I did some two short timelapse tests. The sunset one took me about 50 minutes to shoot, the moving stars thing was a little more than an hour and a half and the one with the moving clouds was shot in about 40 minutes. I've also shot some cityscapes and landscapes, and built some HDRs outta some of those.
The great aperture comes up to the high expectations I've had. Sharp at very low aperture, corners can be a tiny little bit soft sometimes. Colors look great as far as I can tell so far. I've had some difficulties with the auto-focus but I guess I'll figure that out soon. The AF is not too slow and I don't really give a damn about the noise it makes (still it's not the loudest AF).
The lens has quite a small focal range though this is no problem for me since I was actually looking for a wide-angle prime but found this to be the better choice.
Test shots: Bern, Switzerland (2012/09/10)