I'll have to try out the backspace so I can add that to the documentation.
I knew you could still choose different characters after you had selected to train, for example, but I don't think I've tried dual-classing a character in DC. I know I used to Secret of the silver Blades - take a human ranger to 9th level (so they could cast magic user spells) then switch to a magic user, that way you could wear armor and still cast spells.