According to Murphy's Law, "Anything can snag on anything else, and will do so at the most inopportune times." Mounted in a recessed pocket, snagging in a forward move seems unlikely, but still possible. If the bow were sweeping to the side in brush, I'd expect the probability of a snag on most grab handles to increase.
I use a Tee arrangement with a wooden handle - pretty similar to a wooden handle on a starter rope - that is tied into the stem ends. It flops loosely on a rope that is 4"-6" long, seized around the middle to hold in the wooden handle. These are a bit safer than a handle that is solidly fixed to the boat if you are pulling a boat through rolling surf, or if the boat rolls for any reason while you have a hold of it. The rope will twist instead of your wrist twisting.
Nonetheless, I try to avoid anything like brush, rolling surf, or rolling boats.
I think the nylon grip is a good one, especially for the price. Some grips have little bungees holding them down, out of harm's way. Almost all grips, even starter cord ones, would benefit from an elastic tether, I think.