I use this combo as my primary setup (though with the newer 2.8-4 version). Having battled LBA since first getting into digital photography, I've tried numerous times to replace the 17-70 as my main lens, all to no avail. The sharpness of the photos, the fast QUIET focussing and the convenient FL have kept it on my camera.
I tried HARD to find a zoom lens that encompassed a larger range (18-200, 18-250, 18-135, etc. Call me a dreamer!
) but the inconsistent quality across the focal range was disappointing.
I don't have access to any photos at the moment. But trust me, you will not be disappointed!