Hiya
I also dislike the leather gloves and have used the Saeko dive gloves for quite a while. They're very thin and offer good protection.
How-ever, i switched over to those cotton gloves with a plastic type palm. You can buy them at De-la-rey/Builders Wharehouse or hardware. Many commercial fishing tackle shops also sell them. They're ridiculously cheap, costing between R10-20 for a pair. I now exclusively use them, for all kinds of spearing.
Check picture below with a friend who borrowed a pair: