Figured I'd keep KATs thread going since there is a lot of information in here.
I've been nearly a year now with my treatment of RR and it still looks nearly like the day I applied it. The only difference (which I see as a positive) is that a bit of the shine has mellowed so it looks a little more like the natural texture of the cladding.
I'll continue to post an update here and there as the time goes by. I'm going to wash her in the next week or two, so I'll take some good photos to show.
I think the biggest issue is getting the application right and then hand washing only. Per KATs experience I'm thinking powerwashers are a BAD idea.