I don't visit Constellation as often as I'd like because it's at least 3 coffee shops away from me [ the travesty of living on Penn Ave dead center between Voluto, Artisan, 4121, and here ].
That being said, I always enjoy my trips, love the manual brews and espresso equally, and find the atmosphere to be appealing for all manner of visits [social, work, just stopping in].
They source an interesting array of Ceremony Coffees and are, as far as I know, the only Pittsburgh source for said roaster.