I don't ever go in there, but on the rare occasions I've seen people dug in with laptops, cables and and everything, just the same as in a Starbucks. One guy had a printer.
The more you know, I guess.
I've only ever forced myself gone there a few times during stops on long travels or at night when all places near my university were closed. In each instance, I never got the vibe that anyone would sit down for more than 10 minutes.