Thanks Photobob, I have a similar landing gear on my F550 I'll just add that foam,,,I noticed I play with the F450 more than my F550, I find it to be in-efficient in comparison, because of the weight and battery consumption, but I will mount the YUN-1 one it, when it arrives and just take money shots with it, and use the F450 for FPV only.
I took my chance on the brushless motor YUN-1, since the servo's are nothing compared to it, in my opinion,,,also the servo based gimbal cost more than it....but we don't really know.

I also, don't like the idea of waiting 30 days, and additional 2-3 weeks to ship it, so we all won't receive it until March, dang!
This has all the signs of a great camera mount but with the price and unknown history of the builder it seems like a 50/50 decision. I've tried to do some research on the product but there is little to offer on the web. My wallet says order one, my gut says wait for others to post their findings.
I've attached this landing gear on my f550. It's a very clean installation, light, and after shortening the carbon fiber tubes a bit they do not appear in the video or photos. I wrapped the tubes with insulation foam (used to wrap plumbing lines) for added landing comfort.
http://www.atlantahobby.com/Store/pc/viewPrd.asp?idproduct=16902&idcategory=891
Anxious to read others experience with the YUN-1. Would be nice to use the NAZA controller but the Alexmos seems like a nice option.
Best,
Bob