I was tempted by the 17-55, but I refused to buy a lens that only worked with crop sensor cameras. I did it once with my 60mm Macro, but never again. When I go FF I don't want to have to deal with switching glass.
Its a small hassle switching glass but at the same time you don't lose out on the great shots you can get with the lens and body combination you have. The 60mm macro is a great lens for a crop sensor. I had the 100mm Macro on my XSI and felt it was too long for anything but macro so I sold it. The 60mm is more versatile for portraits and other things.
I just sold my 10-22 that I bought for $570 and sold for $525 after owning it for a year. The better EF-S (10-22, 17-55, 15-85, and 60) lens maintain their value almost as well L glass.
On my trip to Dubai I was able to fit the Burj Khalifa in the frame with my 60D/10-22 combination which something I wasn't able to do with my 24-105L at the time.