Just curious if anyone has experience with any of these devices. They look very interesting...not sure if they'd be suitable to integrate with simulator software (as an alternative to something like the DD), but I think they're a very interesting option to add on for someone with a camera-based system that is looking for club data (far, far cheaper than the club analyzer add-on for GC2, that's for sure).

http://www.theswingsmart.com./

http://www.swingbyte.com/

http://www.3bayslife.com/gsa