as a long time symbian user, i wont be switching, and to me this latest version of symbian is so perfect, i have no need to switch.
The number of novelty apps and games available really doesnt mean much. The new windows based nokias seem to aimed more to those that have a life already.
And it seems to be paying off. The lumia 800 looks like an exceptional device. But then again, so was the n900 and n9. So its probably too early to see the true effects of the collaboration.
I for one will stay loyal to symbian.