Producing the glove to fit one's hand perfectly, can be done without molding it directly on the hand. But, its much more difficult to do. The problem would be easilly solved, if there would be material with equal performance of silicone, but would in time, shape to fit the user. No such material out there... at least not one with all the good performance of silicone.

If you cut the slovenian glove, dont forget to put a layer of silicone on the edges. Edges tend to tear apart if not siliconized. Any silicon for plumming fixtures, will do the job just fine.