Yes(In fact using it with one already). Metro might have its uses,but for me it just can't replace the classic desktop.
No I tried it initially, but for me, the metro menu is a bit of pain at first but soon easy enough. For my use, all the main apps and shutdown/restart are on metro menu and on desktop/userfiles shortcuts. Thus, 1 click is all it takes to move to desktop and one winkey press+one click allows me to shutdown/restart. Most may differ, but I have minimal problems with metro.
Getting used to the new way of navigating, liking it a lot Although I did buy Start8 (at a cheaper price) but haven't used the final version, at least I have an option.
Yes. The Office ribbon sucks, and so does the metro menu in W8 (imho). I simply fail to understand why Microsoft would try to remove something that's proven (and was already present). Why not give people the option to choose between the two.