Bryan, I was in the exact same situation that you were in. I love my T2i, but went with the 7d and have not one regret.

After considerable debate, I've placed the order for a 7D. Am anxious to see how well the T2i and it work together.

When buying a 2nd camera consider that if you buy a different model then you'll need different batteries and cards.

Well sure, fortunately I've already got a slew of CF cards from my Sony Z7U.

Well, on a product shoot yesterday with the t2i, I realized why I really need the 7D. Was using my mini dolly/jib and while I was fine looking through the viewfinder, the client said he would like to see what was happening. Sucked to tell the client it couldn't happen but he was thrilled with the end results which overshadowed the inconvenience. Thankfully, I have all the lenses I need and support gear so I just need a body!