I've had a F800 version for a little over a year now and am in the process of upgrading it to work for my new 1200GS.
The tools are cheap and the chrome plating is thin but it does the job. I've had two 3/8 > 1/4" ratchet adapters where the little ball retainer popped out but in both cases the company sent a replacement no charge.
I keep mine in a micro Pelican case about 6x10" of so and do ALL my repairs with it. The one socket that did not work well is the oil plug socket on the F800GS; it's a thin nut and the bevel of the socket face makes it easy to slip and mar the top.
Pricey maybe but convenient for sure. If you've go the bucks it's a good buy, if you're short on money and have the time you can do it yourself.
2010 1200GS Adventure