I love my Cross Check, and it's awesome as a singlespeed. Here's a pic of mine in SS 'cross setup doin' work.
I race CX on it, ride singletrack MTB trails, switch out the wheels/tires to ride it on the road, I'm about to take it on an overnight tour to the gulf coast, etc, etc. It does EVERYTHING. My CC gets more use than any of my geared bikes.
CrossCheck.jpg