Installed the Alu-Rack on my bike this weekend, and I can't recommend it more. All things considered, it's relatively inexpensive, and mounts SOLIDLY without touching plastics or painted surfaces. It's really very well designed. I installed mine in about 20min., but only because I was moving very slowly and methodically. You really could do it in 10min.
That being said, I ordered a topcase that is too small for my tastes. I intend to put it up in Marketplace at the end of the summer, but if anyone is interested send me a PM.
Alex, hopefully you'll agree this is more of a review and update than an actual solicitation.