First let me say, Sway is a HORRIBLE name for this skill. I'm not a creative person when it comes to naming stuff, no one's perfect.
The point of sway  is to take a sweeping look at your surroundings. Mainly a 180o pivot of the head. Such that if you were facing east, you'd look north, north-east, east, south-east, south, and only be told of anything spotted in your field of view. Insert lag and whatnot.
That's all I have to say on that, expound on it as you will, I prefer to leave my ideas more open-ended than not.
I originally was going to suggest to have this as an addendum to watch, then I thought that'd it would need something to balance it out, such as extra move lag or whatever, and I don't want to hinder watch rather than help it. So instead, I think when there is something new in the direction you are watching, the game should inform you of it. I originally thought thats how watch worked, and the first time I used watch I walked right into pack of gith who then tore my unsuspecting char apart.
I feel tired of a sudden so I'ma leave it at that.
			
			
			
				Perhaps.... 'Scan' could serve as a better name? 
I like the idea.  ;D
			
			
			
				Actually, there have been other ideas like this.
http://www.zalanthas.org/gdb/index.php/topic,22572.0.html (http://www.zalanthas.org/gdb/index.php/topic,22572.0.html)
So yeah, I'm in favor of something of this sort of thing. 
			
			
			
				A good idea, I like it.  Name sucks though, someone should name it  better.  I don't have a good name in my head right now either.
(sorry xio)
EDIT:  I need to pay more attention to the poster names apparently
			
			
			
				Call it survey.
The grey man surveys the room_type.