Yeah, Spa Cycles has 10 or so handbuilt wheel options for good prices. They use more mainstream options too for some of the builds- H+Son rims, Ultegra/105/Tiagra/Deore hubs, etc.
The wheels are handbuilt and use double butted spokes.
One thing to note that will get a few here in a tizzy if they stumble across the site or this thread is that the wheels are built with plain gauge spokes on the driveside section of the rear wheel for strength. This is Spa Cycle's claim, not mine.