Lol! Not to mention many of the Seattle grunge clubs that were opened in low rent semi-industrial Denny Regrade were torn down by Paul Allen to build high-rise condos (RCNDY), went upscale and lost the atmosphere (Crocodile Cafe), turned into a sportsbar (Sit n Spin), or became a hip-hop or rave club (too mny to name). A couple noteworthy exceptions is the Offramp (now called El Corizone) that still has local bands and still has that grunge bar piss and puke scent to it, and The Central Saloon, which is ... well, the Central, where they advertise live music every night of the week. The Offramp is on a block right next to the freeway that Paul Allen hasn't gotten his hands on yet, and the Central is a historic pub in the Pioneer Square Historical district.Maybe just because it is getting a little old hat for them, but I would still say it was happening. Lot of people were talking up the Mid West brew scene when I was there. It could just follow trends like that (think rock music - and how over the times there have been scenes based in certain cities/regions in the US. Just because grunge is no longer the trend of the day, Seattle still has a great rock scene - just less crowded).
And Pete Critter, you should start your trip in Seattle, and hit Portland on the way to the Craters & Yellowstone. There's some great breweries along the way, starting with Walking Man in Stevenson Washington. Grand Teton Brewing in Victor Idaho makes some good beer too.
Anyway, I'm rambling ... I myself am planning on heading back to hometown Seattle mid-year sometime if everything falls into place.