I made up a couple of the folding gambrels, one for myself and one as a thank-you for a friend. I made his and then we thought it would be more useful without the hook and he has cut that off now. When it came to mine I thought I would make it even more portable/demountable using an "S" hook instead of a ring...
I have set the "S" hook so that the arms can only come off the small end. They can be carried nested by taking one off and putting it on backwards.
The other thing I did was made all the ends bullet shaped rather than pointed. They will follow a slit through the deer's leg just as well, but they are kinder on your trouser pockets and won't stick you in the thigh!