Wait but is it feeling hot because of the grips or because of your hands? Like when ur hands are on them, and it feels hot, remove your hands from the grips and see if they remain warm. It shouldnt be happening tho as theres nothing right on the plastic underneath, on the grip sides, so there is no reason for it to get hot. In my experience they remain stone cold

Yes, your electronic device using power will be warmer than your hands.