Mission Impossible 3

Is the "walk up walls" grappling hook possible?  You'd need a motorized spool that would pull up with just the right amount of force and pull as fast running horizontally.  It would have to be attached securely and be strong enough to support body weight, and have a strong enough motor that wouldn't generate tons of noise or be too heavy.  I'm wondering how well it would work in real life.   

Running up the wall would do nothing. You would have to be at a maximum of a 45 degree angle to the wall to propel any upward force whatsoever, so the entire thing is null. Oh, and it wouldn't work.

unless you had some fuckin sweet sticky boots

Could always get some bitchin' spike boots.

or some spider web, but that wouldnt work becuase no one knows hot to shot web ;(