The dangers of spincocking lie primarily in where the trigger finger & muzzle end up when the action closes.
The danger is surely at that moment, which is why anyone with any sense would experiment with dummy rounds first before even thinking about trying it for real. (and I'd be heavily biased towards NOT trying it for real)
If you'd followed the thread
Oh, I've been following it and following the ML introductions waiting for one in .22__ to arrive, and I think a lot of the conversation has been downright silly. Mare's Leg guns are toys, regardless of their destructive power. I doubt anyone is getting one as a primary defensive arm, so worries about running one under time pressure should be limited to CAS/SASS.
And the running of ANY gun will require experimintation to perfect, which is what a little rimfire version is perfect for. Henry has the right idea selling a "buttless trapper" in .22lr (and I'm confident that it will run shorts and longs, too) as a toy, the price of the centerfire versions puts a damper on the potential buyer's ambition to own such an item, as it has little practical value beyond "range toy". I, for one, am not about to get into a new caliber and buy an expensive toy just for unloading that new caliber ... so a .22lr toy is perfect.
Just because someone has considered the possibility of running one one-handed doesn't mean they're dead-set on using one as a primary weapon, and even if they were set on such a silly plan:
1 - the silliness will be obvious the moment they pick one up
and
2 - it isn't my problem if they insist on putting a ML to serious use
I was obviously not refering to the rimfire gun with my comment about one-handed loading through the gate.
I wanted to ensure you didn't think you were referring to the .45LC version either. Henry is not putting a loading gate on these, in fact I'm not sure if Henry bothers to put a loading gate on anything. (which is fine with me, I'm tored of getting my fingers pinched or needing another round to push every round in the gate)