you can't lace it to a soma hub. you can buy an adapter for the hed hub that's built into the rim.

they're expensive. they're light, very aerodynamic, and stiff... but they are expensive.

and for most riders it's just for looks. if you have a real reason you need one go for it and get the hed adapter for fixed, but if you don't need it just get over it. real wheels look better than dumb carbon wheels on a street bike.

and if you're a racer these don't look nearly as good as a corima or mavic i/o.