IMHO, you'd be better off with a traditional key case/wallet. It will add a little weight, but it's less likely to get tangled, or scratched, up with the rest of the ballast in your pocket.

Option two is to get, or make, a key silencer.

Option 3 is a cable or ball chain ring
_________________________
Hope for the best and prepare for the worst.

The object in life is not to be on the side of the majority, but to escape finding oneself in the ranks of the insane