I think it's fair to count at least a subset of Arc users in the "wants vertical tabs" camp. I have several friends and co-workers who use it now, and most of them mentioned vertical tabs at least once.
I agree that it's probably still an 'enthusiast' feature, but it's one that I think is starting to catch the road and has a pretty solid future trajectory.
I agree that it's probably still an 'enthusiast' feature, but it's one that I think is starting to catch the road and has a pretty solid future trajectory.