The 12-28 is quite interesting in deed; that extra 4 mm range might prove to be useful. Sort of a combination of the 11-16 & 16-28 (or really just a slight extension/upgrade of the 12-24, having f/4 instead of f/2.8).
The 70-200 is quite heavy, especially compared to the e.g. Nikkor 4/VR and even more so compared to the similar Canon 4/IS. Let's hope the Tokina is well built and that the price is right. Could be tight to squeeze it in between the other third party 2.8 and original lenses though.
Works nicely on my Nokia N8. Looking forward to be able to sign in on the m. site (and not having to switch over to the regular site/desktop version to do that :)./A.