Quote Originally Posted by Ilion Sturmlied
Just block WASD, so it will not be parsed to the other client.

Then set up a macro on the 2nd client with /follow toon1 and map it to F1.
You should also delete the Keybinding for F1 on the 1st client.

What I found very handy was mapping one of the other chars to use ALT+1-0.

ALT+1-5 is very easy to reach. Also bindings like ALT+Q/E/R/F/C are handy.

With Keymaps that might be even easier to do.
Very good advice. You're right about the Alt keys. So, what do you recommend playing with then? I really want a mage, and I really want a Warrior. Should I try them both? I could add a third possibly :P which sounds like a blast. That way, I could do a shaman/warrior/mage and wouldn't have to sacrafice healing. But i'm not sure yet.