Well Mink Oil is a water proofer so getting it wet wouldn't matter. I wouldn't use Mink Oil on mine though. I treat it once in a while with Proof Hide and don't worry about it. By once in a while I mean, when I think about it, which has been maybe twice after the initial treatment five years ago.

Mine gets wet once in a while and it is no real issue. I prefer to not ride it when it is wet, but if I am miles from home, and it is wet, I really don;t have a choice. The seat is very comfortable.

My brother has a Brooks on a bike that was purchased used when we were kids, back in the mid-70's. It came with the Brooks and the same Brooks is still on it. It has done numerous Ragbrais, a trip to Oklahoma from Iowa, across Oklahoma and general riding over the past 40 years and it is still good. I don't think he has ever treated the seat at all.

I cover mine if it looks like it will be retained on while parked, but don't get all freaked out about it.

Gotta go now, riding to work with heavy rain clouds in the sky.