Same here. I love "complexity" in games, not "complexity" in getting it to start up and run smoothly at th best possible visual fidelity...
Well, take a look at how Bioshock handled weapon / plasmid swapping. You could hold down RB to bring up a radial selection of all your weapons, while it paused the game for you. You could easily choose your weapon, release RB and be back in the action without having to sacrifice any health in the game. It works wonderfully, IMHO...
Then it should work well. The difference is that DA is party based and bioshock single player but I don't think that should make much of a difference.