@smicallef
Yes the idea of Microsoft proving a similar functionality is scary, but I feel a little bit like "if they were going to do it they would have done it", also they have access to protect. But maybe I am in for an unpleasant suprise, certainly a risk.
@tzury
Yes there is an interesting marketing proposition here in my opinion. I can either market to heavy Excel users who don't use SQL yet or market to SQL users who occasionally find themselves using Excel. It's an interesting one. At the moment I am leaning more towards SQL users, they can immediately see the possibilities. hmmm.