Not reviews, but tryst, open adult directory, and dickie virgin help to build a list. I was looking at some of Portland doms myself, but didn't get there yet.
If you do end up seeing someone there, it would be nice to hear about the experience.
Frankly speaking though, I feel like Vancouver scene has a lot to offer and not everything is explored yet. I find it that only, maybe, Toronto has a better representation and doesn't cost a whole lot, unlike, say, LA.
Anyway, GL with your adventures in Oregon!