Space grip = bad news. Mine almost cost me my $500 Moab during a 600k brevet. Fortunately it was only half way in and I wasn't so delirious that I was able to catch it before it hit the ground.

I second snooping around Peter White's site. I ended up getting NOBs from him and mounting my lights on my fork (used hardware store no slip tape like used on stairs to make sure they don't slip). The set up is great.