I was about to reply to this, but then realised it was my own thread from three years ago.
In any case, I'm on another firearms board where the population is mainly other 20-somethings, and I'm always talking up the Tyler T-grip there. I still find it an ideal way to improve grip without adding bulk. I was slightly annoyed when I bought an old P&R S&W 18 for $300, got some wooden grips for it and was about to spring for the $30 solid bronze T-grip... and then realized I already had a K-frame T-grip in my spare-parts box and didn't have to buy a new one. I need to start including the T-grips with any guns I trade/sell so I have reason to buy new ones to support Tyler.