The whole Drupal Commerce vs. UberCart has gotten me very confused. I am ecstatic to hear that the core UC developers are so committed to UC and its growth and truly appreciate all your work.
One thing that is lingering on my mind is compatibility between Drupal Commerce and UberCart further down the line. Will the two likely proceed in such different directions so that in the event a user of either (DC or UC) should want to switch over would have difficulty simply switching from one to the other? Will they have to completely rebuild from the beginning?
Basically what I am saying is that I think it would be a good idea to keep this in mind as UC evolves. The transition from either e-commerce system should be made as simple and smooth as possible.