I just got mine in yesterday and I am loving it so far. The Topre switches feel really really nice to type on; I can't get enough of them.
The layout is very comfortable and great, and pretty gaming friendly as well. The only thing I would complain about would be that the kb is longer than it has to be because of the wasted space on the right side.
It has some nice weight to it; still light but you can feel that it is very well built. The keycaps feel pretty nice as well, but not really liking the printing method. I can tell that the characters will eventually start to fade, but at least they didn't use any strange font for them.
The Topre switches were actually just what I was looking for; light, noticeably tactile (browns didn't do it for me), and fairly quiet. I'm actually kinda leaning towards the "thock" sound of Topres over the "click" of the MX blues - the sound that Topres make is just music to my ears.
All in all, I am very happy with my purchase and since I really do enjoy Topres, the FC660C will be the last keyboard I buy.
Also, a special thanks to qtan for hooking us up with the fc660c proxy.