If you are interested in a slightly lighter and comparable Surly frame you can look at the cross check, slightly higher bottom bracket, but essentially the same frame.

Right now i'm chomping at the bit for a cross check. It will be perfect for year round commuting, and here in michigan i will need it to run full fenders with studded 700c tires for winter, and for the most part, you would have to ride a mtb or a cx bike to be able to get those capabilities and clearances.