I put the 10130 on mine last night. Install was smooth and easy, BUT too many things just still don't work right that I'm taking it back to 8.2
1. New mail app is fine, but won't work with iCloud mail and you can't even get to the real settings to try to fix that.
2. Tapatalk still crashes, this has been true for many of the releases.
3. Can't log in with PIN even though I've set it to. Doesn't even offer it as an option except in 'settings'
4. The Spartan Project doesn't do plugins or extensions from what I see
5. And as has been noted, the pen won't pull up OneNote and the spiral ink menu seems to be gone.
Overall they've cleaned it up quite well, but from a user that primarily uses touch, it isn't an improvement from 8.1 IMO.