Have been reading reviews and this seems to be one of the best wide-angle zoom in terms of optical performance (it loses to the top end lenses from Canon and Nikon) and beat the Sigma 24-70 f/2.8 EX DF slightly. It's pretty light too (265g) and it's cheap (~USD100).
Thought it might be a good alternative compared to lenses like the Canon 24-85 f/3.5-4.5 or the other usual stay-on lenses.
Just a thought....
I won't be getting this though. reckon the 18-55mm that comes with my camera to be sufficient for this range.