Honestly would not bother me at all based on my previous experience with WP7.
I know that technically it is a new OS, but from a user perspective, it will be the same, with enhancements as wp7. Which intrigues me, as IMO, wp7 as an OS was as good or better than anything I have used (sales numbers be darned). iOS and android 4.0-4.1 included.
The apps (or lack of certain ones) are the main holdback. When I had my WP7 device I did not have my security system installed, so it was not an issue. Most of the main apps were there, so I could get by, and even wait, on the other few that I needed.
Now that we have this camera system, having access to it on the go is important. Deal breaker even. So until that app comes out, most likely, and unfortunately, I will have to steer clear.
Anyway, not trying to derail this one, just making a comment to my fellow phone whore.
Come on Todd.... got the itch yet.... Did you see the story I posted with the allmighty benchmarks... causing you to twitch a little, as you fight to hold in your inner phone whore?