The crankset is 50/39/30 with friction shifting on the F. derailer, so it's not a huge deal to swap out a 26t third chainring. I think Surly has a 46/36/26 square taper drive crankset. The KHS has Octalink. Because the middle chainring is 39 and not the standard road 42, it's easier to go lower on the small ring if you swap it out.
I'd like to test ride the KHS..