How much has it damaged your QWERTY skill? I have avoided trying to learn another layout because occasionally you need to use someone else's keyboard and I don't want to look like an idiot.
I am currently at: 1) I don't type dvorak fast enough which really reduces my motivation, but I'm getting faster pretty quickly 2) My qwerty typing skills have gotten even worse, I look a bit stupid when I try to fix problems on other computers at ~15 WPM.
Generally I don't regret starting to type dvorak, I just wish I had done it another time where typing slowly doesn't affect me as much.
Keep at it!