A word of caution for folks who want to go with the Boyd clinchers -- I mentioned this as an aside in my first comments on the 50mm clinchers, but after several more miles I feel it is something folks need to accept. The proprietary brake pads require significantly more runway for braking than any other wheel/pad combo I have run. I would venture to guess that they require upwards of 50% more runway to come to a complete stop (my unscientific guess).
The newer carbon clinchers have different resins and epoxies which help out with both the stopping power and heat dissipation. They also have a 3K weave on the brake track instead of the unidirectional. The braking performance has improved with all of this. The thing to remember with carbon clinchers is that stopping is a product of friction and friction causes heat. With tubulars because you don't have the small hook with outward pressure from the tire, brake pads selection is not as important and the Swissstops are fine to use. Swissstops are a great brake pads and stop extremely well but this does cause significantly more heat which is why they are not recommended for anybody's carbon clinchers.
We are working on a lot of things for 2013 and one of those things is definitely brake pad development. We have been working with a few companies in Taiwan with finding the right material for the resins and epoxies that will keep the temperatures lower and still have good stopping power. The tests are pretty cool, 4 seconds on, 4 seconds off braking for 12 minutes with constant temperature monitoring, the temperatures will rise steadily and then plateau for the rest of the test. It's not a test to failure point although we will be doing those as well.
The Handcrafted Revolution