I'd recommend calling or emailing them and asking about their hubs. It's not clear from their website whether they use loose ball or cartridge bearings. In my experience, low-end loose ball bearing hubs can be a real hassle, needing frequent cone adjustment and getting easily pitted. If they're cartridge, they'll probably be reliable enough for light riding and commuting use.
You may also want to factor in the cost of getting them trued by a local shop, though. I wouldn't trust Pure Fix wheels to be very well-built out of the box.