I already have a plastic Trigger Shoe made in Japan
I think I posted this earlier in the thread but FIE in Italy used to crank out Tyler clones. Numrich was selling them, but they sold out in a few days. I have also seen either a Japanese or Chinese T-Grip clone, in a blister pack with a tiger on it. The "cloners" must have given up because there wasn't much of a market, maybe they will make some more.
I think Tylers are in demand because they were a "vintage" touch to a vintage revolver. For pure functionality, there are other wood and rubber grip makers who offer stuff to fill the gap in the front, and few if any revolvers come with wood grip panels anymore besides the S&W Classics.
Maybe S&W will re-introduce the aluminum and rubber grip adapters.