I agree. I tried to make one this spring and wasn't impressed. I'll save the rest for trumpets which it does work well for. I'm sadly disappointed. I was sure that Micarta would make a great striker. It didn't.
A Davis yelper is another project I'll be working on at some point and I'm going to try micarta for it.
I have 2 micarta bodied trumpets and they both work great. Can't wait to see what you do with it.