First thing I noticed too. I’ve seen house balls with two sets of finger holes that are differently sized, but they’re usually on opposite sides of the thumb hole. I could maybe see this pattern for giving another grip option depending on hand size or where you place your thumb, if the thumb hole were offset. You’d still use two fingers, but you have two options for where to put them in relation to your thumb position.
First thing I noticed too. I’ve seen house balls with two sets of finger holes that are differently sized, but they’re usually on opposite sides of the thumb hole. I could maybe see this pattern for giving another grip option depending on hand size or where you place your thumb, if the thumb hole were offset. You’d still use two fingers, but you have two options for where to put them in relation to your thumb position.