KJay,
At the end of the day, don't even think of water-proofing your outers.
Being in a situation where your outers are wet, is not good at all.
I have a second set of outers that stay in my glovebox in the cab of my vehicle, if my outers get visibly wet, they get changed.
If you are doing true live work with gloves and outers on, you should be constantly monitoring the integrity of not only your outers, but the gloves that they protect.
To be honest, only when I'm in a situation where they might be needed, do I wear gloves and outers.
The outers are not protection by themselves, they are but part of the total system, the inners rely on the outers for mechanical protection.
Never compromise the integrity of the inners by using something that might damage the outers.
If you are having an issue with the outers causing dexterity problems, over rubber gloves, I'm afraid you are going to have to live that, these gloves are for your protection.
