…i believe there is a warning about not using the Handy the ‘wrong’ way round, i.e. over your balls with the buttons facing away from you, as opposed to over your crotch. This might lead to the descending mechanism pinching some loose skin around the top of your balls, which could lead to an injury.
i use the Handy the ‘wrong’ way round myself, usually on a plethora of intoxicants (including alcohol), and would not consider doing it any other way. i do have a hands-free mount, i do take care to make sure i’m free from pinch potential. Used it for ages, and just being careful usually does the trick. However, if you want to be absolutely secure, find something tight to the crotch to wear (jockstrap, speedos, pair of tights, rubber pants, wtvr…) and cut a neat hole for your dick et voilà, safety pants.
Though not entirely necessary (i’ve used the Handy numerous times butt naked), it can be reassuring if you’re intending to be seshing all night and get totally wasted, but then again i’ve always enjoyed dressing up for a wank, so maybe this is just my role play fetish coming out!
Another handy Handy trick is to get the fattest possible sleeve, ideal a FleshlightGo or similar. The fatter the sleeve, the further your delicate bits are from the mechanism, and consequently safer. Also, never strap your Handy to yourself in any way, the freedom of movement that you get from hands-free mount actual helps protect you as you can move away swiftly if the occasion ever commands. Common sense, but best stated for the record.
No experience with the other device, i can say the Handy is a stunning piece of design, it’s amazingly easy to use, to sync up, etc. Has enough power to comfortably drive a FleshlightGo (normal Fleshlight won’t fit within the sleeve), and no stupid batteries, so the voltage is always peachy, great tech and customer support, etc…