Ironically, in the games that you can run and shoot..the gameplay is not made around it.
In Gears of Wars, is all about taking cover, aiming and shooting..same with Uncharted..
In Dead Space is quite similar too (except no cover), since the game revolves around shooting to the monsters limbs..to inflict massive damage

p) ..something that you can't do, running and shooting..
This games are praised (at least on Resident Evil threads) because their controls schemes allow for running and shooting..when it actually lets you run and walk, since running and shooting in those game won't get you that far..because (as I said) their gameplay doesn't revolve around running and shooting (or even walking) to begin with..
Yet, Resident Evil 5..a game designed around the fact that you can't run and shoot, is slammed like crazy...like it's 1996 all over again.
But whatever, the less people enjoy the demo because of the control, the least likely they are to get the game on day one; the more copies will be available at stores..so I won't need to rush after work, worried that some wave of nerds got my preordered copy just to run to their latest blog/forum/twitter/MySpace/Facebook....and complain about the controller set-up.....again.