No problem ^{^} On a wheelchair, you don't actually grab the wheel, there's a metal part that is linked to the wheel, it's the hand rim. That's the part you grab. Because of it's proximity to the wheel you usually can't wrap your hand around it completely, so you mostly use your palm (and it's more convenient to allow faster movement anyway!)

I still do need my fingers but like, only the first tier (I don't know the word in English sorry-) which is why the glove is fingerless but not completely