Well, if you think about it, fast switching is cheasy to begin with. Who switches weapons during combat? Yet, NCsoft put it in there, it survived the beta, and it made it to live, so that's that.
I'd much rather quest for some W/E armor that increases energy as well as AL, but there isn't such a thing in game
yet. I have high hopes of something like that becoming available at some point in the near future. Alas, not yet.
You work with the tools you're given, that's all. Besides, as Rhaz said, there is no way you can use this in meele combat because of cast times and recharge rates. You start combat with the big one, then switch as you close in. It's not like you'd be whipping the thing in-and-out all the fight long
