Ok I get the misunderstanding:
You (Nexy) intended this to be a feature request, such that in editor mode, you can use your user skin in mania mapping instead of the default.
theowest misinterpreted this as when you're in mania mode, you always use the default skin, and want to be able to use your user skin.
Whee complete misunderstanding. Try to phrase your request more clearly.
Anyway, I don't see the need of it. Can you elaborate on one example where user skin is preferable?