Okay, so I've used my BAD in the water a bunch. It HAS held up extremely well, and is really a kick ***, bad *** strap.
The first pic was taken pretty shortly after arriving from Firenze.
The second and third pic are what it looks like soaking wet.
The fourth pic is after some adventure.
The fifth pic is soaked through from sweat.
And the last several pics are what it looks like now.
You can see it HAS darkened a little, but I absolutely love where the patina is at now. Every once in a while I treat it with Nivea Soft as per Simona's instructions and it is supple and soft as ever.
I have actually slowed down using it in the water for two reasons.
1. I LOVE where the patina is at, and I don't want it to get too dark too fast.
2. I have two other straps that I prefer in the water. A prototype of the Distefano 1945 strap which has gotten darker, but looks and feels amazing, and more recently the OEM Cashmere Gold strap, which I used for 9 days in Mexico in both salt and pool water. The reason I like these two straps is because they DRY quicker. The BAD is very thick and I find it takes a long time to dry out fully on the wrist. I often use these straps when I'm travelling, or up at a cottage and I want to wear the watch all day without changing straps. The 1945 is thinner and dries out quicker, and the Cashmere gold has some magical ability to not get too soaked through in the first place.
Regardless, the BAD is an amazing strap.