I used that exact rack from Nashbar on my MTB commuter, and then on my Cross Check as a commuter and rando bike before switching out for the rack I have now.
The only issue with it is the low weight capacity. The attachments are a bit flimsy and I suggest beefing up the crown mount if you intend on putting a hardside cooler on there. I used some strip steel from the hardware store and made my own mount for it. Worked out great.

When I stepped up a level, I went with the Velo Orange randonneur rack. I like it better for having the hoop back for holding a canvas/leather type front bag, an open platform for bags with underside straps, and M5 eyelets on the rack for lighting mounts.