This collaboration was good, but not earthshakingly great. What I liked best, in a lot of ways, was the slide-of-life aspect of the story involving Tooe. Her personality, combined with her attempts to understand things like constant gravity, were a real treat. The "combat" maneuvers of the two Trader ships were really cool, too. I didn't really like the character interactions other than that, because for some reason the whole psionics side-story didn't convince me. Too much of that felt like it was set up for the purpose of making the interspecies stuff work.
Still, it was a fun, quick read, and fans of the earlier Solar Queen stories will probably enjoy it.