I really like this view. I assume it's looking towards Paris' #13.
Upward, did some quick internet research of people who've used tripods on the tower. They say they didn't have any problems, and that the staff is very accomodating, in fact, to photographers.
Make sure you show us your views!
I never made it to the top of Tour Montparnasse, but did make it to the top of the Eiffel, at night. Unfortunately, it was with a crappy, crappy camera.