I've found the horizontals to really need a second coat on most decks so far. We haven't used the grey yet but none of the floors have held enough color at the surface with only one coat. A light second coat just before we leave has helped to even things up and leave a much richer appearance to the wood.
I have a bunch of pics as soon as I get my camera back from my lead guy
We started another log home and it's been in his truck the whole time.