I've also used Tour Hex as the cross with a bunch of poly mains such as Solinco Barb Wire, Volkl Cyclone, Kirschbaum Max Power, and Solinco Tour Bite. I've actually liked it with pretty much all of them. I tended to like using it with 16g mains. Having Tour Hex in the crosses seemed to provide a bit more comfort, consistency, and power than playing with full-bed tour hex, but I liked the feel better than full bed of any of the poly strings individually. Just an opinion. I'm still trying out more permutations.
It isn't a smooth poly, but it seems to work well as a cross still.
It isn't a smooth poly, but it seems to work well as a cross still.