Leather Crack Gloves

Has anyone ever done this? I have some scrap leather, and was wondering if there's a reason this would be a bad idea? Wouldn't it be somewhat similar to the G7s?

G7 uses suede, i'm pretty sure. They're quite soft, unlike veg-tan (which I'm assuming your scrap is?) - maybe something like 2-3oz goatskin would work. I've got some and its close to the supple feel you'd want. Just my 2 cents, i think the closure might give you issues, since G7 uses a sort of stiffening material on the wrist and finger loops to keep from deformation.

It wouldn't be a brilliant idea, leather has poor tensile strength, gets wet and stretches out, dries out and becomes hard, the chrome tanning makes it an environmental hazard both in production and disposal. If you look closely at wideboys and BD you'll see that the synthetic leather is actually a woven fabric, this makes it consistent, strong, stretch predictably, breathable, and great abrasion resistance. 

G7 use PU to reinforce leather and keeps the suede around for comfort, but objectively speaking they'd be better off with a high quality synthetic leather. 

Lots of people have made leather crack gloves, I've made some, I've bought some, but there's good reason why non of the big brands do it, and for once it's not price. 

I’ve put on leather gloves and then taped them on for very specific sizes of crack. It made shitty teacup fists go to decent fist jams. It works ok when I need a lot of thumb coverage. But I’m also not very crafty with tape gloves like some folks 

Nicholas Shostak sells "Donkey Gloves" 

I also think that AMG's glove is leather... 

I was inspired when I saw G7's gloves years ago

These are buck skin. They rock.
I want to try goat skin.
I tape the wrists, velcro never held well for my anyway.