I did it for wrist trouble at one point but didn't stick with it, found a different PSO who worked with my hand more and got me into a fit that worked better.

Not to say that you would be in the same situation, but there's a lot of ways to adjust pitches and spans, without going as far as Sarge Easter.

Agree with these posters.  Sarge Easter may or may not be of any benefit.   Other options of changing span and pitches are more likely to help.  There might be some trial and error involved finding what helps

I had to go to the Sarge Easter grip due to a bone spur pressing on my ring finger tendons as well as some arthritis. It has allowed me to keep competing without pain. There was a period of adjustment to it. Throwing my first few 10 pin attempts were pretty awful, but I got the hang of it. My ball roll did change a bit. I spin it a bit more than I used to, but I've always been a spin biscuit. I don't feel it limits my versatility at all, which was a surprise. Also, my rev rate didn't take that much of a dip. The only problems I have with the fit is that how much more finicky I have become with it. The bridge has to be perfect (1/8th) and not too much bevel on the ring finger. Getting that knowledge took a little trial and error for me. I do always caution people that that fit is not for everyone. If you have exhausted other efforts in changes to pitches and span, and are still in pain; the Sarge Easter fit could be worth the gamble. However, make sure you have tried everything and have a knowledgeable PSO. I went through 4 fit changes before my doctor and my PSO figured out it was best if that my top knuckle of ring finger was no longer in use. I hope that helps!