I KNOW they BOTH fit the SAW grip: I now hear the Tromix can't interchange with the CAA ergo grip, now CAN the Saigatech? One member says yes, one says no, would the Mfr care to comment? I'm really not trying to start or fuel any ongoing rivaly, I like the looks of both, but I WILL be using the CAA grip. Thanks for any info, and Skiboat, I emailed you last week with no response (other than the computer generated one)...