I don't know about battery life since it was plugged in, but it was running much hotter in Win 7 than in OS X, and the fan was on more often, so I'm guessing it will be worse. I'll tweak the power settings and see what happens.
The trackpad works the way it always has in Windows, which is to say not as good as OS X but usable.
I also noticed that I couldn't access or even see the Mac partition from within Boot Camp. Perhaps its because I activated File Vault on the Mac partition, but I'll check that out.