I have ran them for several years and believe overall they are actually safer then a thumb throttle. You get so much more grip wrapping your thumb around the bars that alone is a safety improvement. When I had the thumb throttles a few times I would accidentally be full pinned when I didn’t want to trying to hold on to the bars. Thumb throttles can be dangerous for inexperienced riders when they go into reverse hit the throttle a little to hard lose balance and end up wide open going backwards. My concern with the finger throttle was tree branches I haven’t had a problem yet but I can see how that would be an issue. Also I got my throttle cable tight by making a little spacer to get it away from the bars a bit.