Powell's employees are way worse than the Strand employees, hands down.
Really? I don't think you can get much worse than the Strand employees. At Powells, on the other hand, I don't remember seeing or interacting with any employees at all outside of the checkout. This might have been annoying if I was looking for a specific book instead of browsing, but I'll still take total absence over the surly, stinky Strand employees anyway (NB: I am generalizing; I've had positive Strand experiences and have friends who have worked there. But both are in the minority).