[IvyMike]

You might be surprised. I just pulled up Process Explorer, which makes it easy to see which running apps are signed, and the only unsigned things I'm currently running are VLC, Evernote, and some Brother Printer utilities.

Things from Google, Intel, MS, VMWare, Spotify, Github, Dropbox, and even f.lux are all signed. Of course YMMV but the trend has been positive.

(A little worrisome is that there are two running Broadcom bluetooth apps that have explicitly revoked signatures...I wonder what that's about.)