I bought a set of the 2015 Assault slg's to run tubeless and had nothing but problems with them. Reynolds sent me another set and they were worse than the first set plus their customer service department basically said "oh well, that's just how the're made". I returned them and bought some Easton ec90sl's which are lighter and wider than the Assaults with a certified road tubeless rim design. They have proven to be an awesome set of wheels so far, I know they're not on your list but thought they were worth a look for you
EC90 SL CLINCHER | Easton Cycling