I have a pair of these things (you see the people in CSI picking up evidence with this, right?)... But i mainly use it for painting small pieces that I've mistakenly cut off the sprue, etc.. That way, i don't get paint on my fingers as often as i used to...
For decals, i use tamiya's Decal tweezers. Becuase they have large, flat "grippers" (for lack of a better word), there's little chance to tear the decal.