And Orange Video Productions has a comparison/perspective on the T2i vs. 7D:
So. Am I going to toss 7D away and get another T2i? NO.
Am I going to return T2i and get another 7D? NO.
I would still feel more comfortable having 7D around, but I see absoutely no reason not to buy T2i as your first HDSLR camera (for the video use, of course).
I personally like 7D because it's slightly bigger, heavier and weather-resistant.