Upload & Sell: On
I was not as impressed with the Tamron for its IQ, focus accuracy/speed, or build quality, although the fast f/2.8 for a budget price is where it is most attractive. I had the 17-50 non-VR version (better than the VR) on a Nikon D7000 and had several problems with focus and exposure in that combination, that almost ruined a trade show assignment. The 60D with 15-85 IS came through the next day and rescued me perfectly! I never looked back and got rid of Tamron lens first, and D7000 later.
The Canon 17-55 IS is a comparable equivalent to the FF 24-70L original, offering fast aperture throughout the range and high IQ. But the price is price, size, and weight. It would be a great set with the 70-200/4L IS, with a small coverage gap.
But for me, I spend most of my time and money on FF gear, and use it occasionally on crop. For the crop, I'm very happy to keep it as an auxiliary camera with just the 15-85 mounted, with its range equal to 24-136mm. Beyond that, it's time for specialized gear. (I feel the same with FF and the 24-105L IS -- just wish it were a touch longer!)
As Dan says, maybe it's time to talk to your wife again and hash things out now that you are aware of these recommendations from the FM members.