Reviews are starting to trickle in and I'm wondering if any Canon users are considering this lens? If so, what is the draw? What kind of shooting are you targeting with it? I currently have the 24-105 f4 and 35 f1.4 and while it would be nice to consolidate those two with a single high quality fast zoom like the 24-70 f2.8 II, I'm not convinced that would provide me much advantage over my two lens combo. If the new lens had IS it would be a less difficult decision. Thoughts?