Are these US prices? I'm thinking of putting a rubber strap on my Carl Brashear too, but i live in Canada and I'm certain it won't be cheap.Heard back from the local dealer and was surprised to hear the prices, $125 for the rubber strap and $130 for the leather. Of course you can get cheaper aftermarket ones but those aren't bad prices for signed OEM straps.
I also have a bespoke blue canvas strap incoming from Combat Straps. It was on his Instagram page yesterday so should be in my hands shortly.