The only guys that ever grab their bow are the ones using a loose grip. Even if they have a sling, most of them still grab the bow out of reflex. In the grand scheme of things, there are very few people that have a sling on their bow that actually use it properly, by letting the sling catch the bow after the shot. The ones that shoot good manage to grab the bow after the arrow is gone. The ones that shoot bad grab the bow before the arrow has cleared the bow. (They're the guys that hope dropaway rests can save their buns. Always looking for another crutch.)

If you maintain a light grip on the bow, you won't ever grab the bow on the shot at all. You done got it grabbed, enough to keep it off the ground. I still say save your money. Play around a little with your hand position to find a grip you can use that will be solid and torque free, but give you confidence the bow will stay in your hand.