http://www.youtube.com/watch?v=s-kVnw4RA80

See 1:05 where the man in the bug mask does a 180 degree swing from the roof of the control tower, into the control tower.
The reason im wondering this is that in game, you wouldn't be able to see into the the room from the roof of it, so how would SMART know that you'd want to do an 180 degree swing into a room below?

(yeah.. making comprehensible sentences isn't my strong point)

Chances are, it would be something that would need to be done manually. You would need to jump, do a 180 turn and then grab the ledge, if it's even possible.

You can't do everything SMART offers, by simply holding the button.

It's only a trailer so we don't know, because a lot in the trailer you can't do in-game.

if that's the case then i hope there's a button for doing a 180 like in mirrors edge

There isn't, but on console, wall hops give a temporary turning bonus away from the wall so that grabbing ledges behind you is possible.

That'll be useful for me ^_^

Alternatively, you can just up your sensitivity.

i dont think smart has anything you deliberately cant do, i think whatever you can imagine doing can actually be done unless its just completely impossible but as long as your close enough to that ledge you can definitely use it, so i think you will be able to do what was in the cinematic, just the way capt. awesome man described it, unfortunately i think whenever you grab a ledge, smart is gonna think you want to get on top of it so i think you would end up jumping off turning around grabbing the ledge but then pulling yourself up. idk who knows no one can say for sure but i hope you can do it.

Seems to me that such a movement would only have very limited uses. Normally, you could just drop down and turn around. If that's not an option, you could just drop down, turn around, and grab onto the ledge below.

So the only time I can see this being all that important would be if the lower opening was back away from the ledge you are dropping from, but too high to climb up to, and i doubt that's very common.

Hopefully it can be done, because it was just such a sixy maneuver. However just because it's in the trailer doesn't mean that it can be done in the game. Take when the soldier flips off a wall over the grenade, even though we know that you can't do flips in the game.