I took the PvP option last week after I capped valor early. It was pretty interesting. There were quite a few horde, but I suspect they were all PvE players because I could take two at a time. When I went over to their base I was pretty sneaky.
Overall it was a lot of fun doing PvP outside of a BG context -- but with some goals to push you and your opponents together without a the cat-calls and clock ticking. It reminded me of the older 4 hour marathon AV runs where being crafty is fun.