jh, where are you again?
Sours are all over the shelves in Denver. My case in point, I could spend hours researching and calling to find Russian River sours (oh how I love them like some of you like JK), since they pop up and quickly disappear pretty regularly across the front range, but there are so many good local ones (new belgium, trinity, paradox, avery, crooked stave, river north, odell) as well as the belgian varieties.. I just consider it a bonus when I happen to come across a RR one on the shelves of my go to store.
Beer will continue to go through its trends. IPAs had their hayday, barrel aged, now sours..