In my Big shot American Leathers glove I treat them with Neatsfoot oil. It softens them up and it is easy to work any grooving that may develop out of them. I quite often walk in left handed with my duo shooter bows and then switch to right handed when i sit. I use the same glove, I message the crease out, do a few blank draws and a practice shot or two, and my left hand glove becomes a a right hand optimized glove. Years back i gave my first James Schulz built nylon American Leathers glove to a friend, he is still using it today. it was a left hand glove for me, it is a right hand glove for him.