I did this on my work laptop as well. The process was painless, however, the lack of interop with Live Messenger is quite frustrating. Not everybody in my company has migrated so that means that if I want to add somebody still on Messenger, I have to go to the live.com website and login to do it. I can't add them in Skype. On top of that, I can't share files with people on Messenger, which is super annoying. I hope that things get better in 66 days!