I guess my hands don't sweat that much. I just open them up and leave them in the open and it takes care of the sweat problem.
Getting open thumb gloves because your hands sweat a lot is a bad idea. Thumbs are covered for a reason. Have you ever had a thumb knuckle glance your eye? With full padded 16 oz gloves? Its much worse without them.. I think the basic idea is avoid training with open thumb gloves unless you really have to use the open gloves; like doing MMA drills or sparring matches with grappling.
So, unless its for the mentioned reasons, go for some nicer full padded gloves. you don't want to take your partners eye out.
Spending some hours on the dashboard of my pickup truck on a sunny day with the windows cracked seems to dry and deodorize my gloves and shin pads.
i use wraps for muay thai, but for my ice hockey gloves, i spray some odor eater in them and let them air on my deck. the only problem is that they start to smell like odor eater, which isnt exactly the greatest smell in the world.
I had an old hair dryer so I disabled the heat coil and got 2 PVC elbows and 1 PVC T and made a glove dryer. It works great and there's no odor. Every now and then I just unhook the dryer and soak the PVC in a disinfectant just incase.
A really nice way to get rid of that smell that i learned is to buy a really cheap bag of cedar chips from Pet Smart or somewhere similar (its extremely cheap, you get a big bag, and some extra odor control cause its meant for pets), put some in a sock, then put that sock in your glove.
If it doesn't completely remove the small it will at least get it to the point where it is barely there.
Theoretically, any desicant or absorbant should work, I think rice would probably be the cheapest/most available.
like the boot one, but for gloves.