Giant Trinity Bottle Cage System - Anyone use one?

Has anyone used one of these? http://www.giant-bicycles.com/en-US/partsaccessories/accessories/113/28895/

My lbs has a couple without the cages for ~ $25.

Just looking for feedback.

They look similar to the tackx one (http://www.amazon.co.uk/Tacx-Saddle-Clamp-Bottle-Mount/dp/B000NNX4Y8) which I use and find a-ok. I modified it by using a silicone glue to attach a ti nut to the top and bottom of the vertical bit that the cages attach to, and screw my co2’s into them.

can you post a pic or two of how you attached the co2 because i also use a modified tacx system
if you dont want to post them can you email them to me?
thanks