I absolutely believe that the Reserve location in Seattle was busy and can second that those locations had a halo effect for the larger brand.

I've only been to the Reserve location in Midtown Manhattan once and it was very different experience than your run-of-the-mill location. Specifically, I had a drink replaced without asking because the barista said it had "died" while I was in the (nice, clean, great smelling) restroom. Overall, it was just a nice, pleasant experience and I definitely would have frequented that location if I was working in that area regularly. I wonder if this shop was a union one? That might explain why everyone was so pleasant and why it seems to have been closed.