Obviously, three stores is not at all a representative sample of the entire country. That said, other publications including CNET and the New York Times have conducted in-person visits of AT&T stores, and found that the salespeople had lukewarm feelings for the Lumia 900. Our earliest experience at the third AT&T store corroborated that.

not really what's needed to get off the ground, is it?
any unconvinced (m$) customer would hardly be won over by such a talk...

EDIT: plus, once the "no upgrade" news gets around, those unconvinced customers will be even fewer.
most apps (coded) for Apollo should also run on Mango, thus the OS version doesn't really matter.
but for the non techie consumer that simply translates to "old software" on "old hardware"...
why bother?