Personally, I far prefer a cordovan tab to a glove but, when I do shoot a glove there are a couple things I want. First, I want cordovan. NOTHING else comes close for wear and smoothness in leather. The ones with the synthetic might be good but I have not tried them. Second, I prefer a single seam down the back of the glove rather than seams on the sides. The worst kind of all for me is the ones that are built just like a regular glove with internal seams down the sides. They can really hurt your fingers. I've had the deer skin ones like that and hated them. The next best is the kind where the leather goes 3/4 of the way around your finger and then has an outside seam down both sides of your finger where it connects to the leather that forms the back. The best (to me) is the type that are cordovan and have a single seam down the back of your finger. There is nothing from one finger glove to interfere with the finger next to it. i.e. no seams where your fingers touch each other.
Lastly, I want the tip of my finger to stick out of the end of the finger stall just enough to get a better feel against my mouth at anchor. Gloves that have a bunch of extra leather at the tip or an enclosed tip don't feel right to me.
But like I said, I far prefer a tab.....