Originally Posted by
Oscooter
These threads are quickly becoming the equivalent of Shaman tanking threads. It's a cool idea, and the way things sit right now it will be possible to do (assuming nothing changes, but things will change), but it will likely never be viable. If it remains possible some people will probably do it for some laughs and maybe somehow it'll remain viable (highly doubt it will though).
Though to all the people who are saying "there are no caster 1 handers" -- the OP is well aware. He's talking of using a physical one handed weapon as his offhand -- since the weapon will likely have nice haste/crit and you can apply +SP enchants and gems, along with our Flametongue weapon, it's possible for it to have better stats than a shield.
Personally, even if everything remains the same and a physical DPS weapon still gives more stats with all the enchants and such in Cataclysm, I somehow doubt it'll ever be viable.