Just FYI, it turns out that the floating copilot only occurs when you switch from another plane to this one. Also, apparently, it's a sim bug not an Hjet bug. It occurs with some other planes, too. I've just never encountered it before. So, as long as it's the first plane you fly in a sim session, your copilot stays back at the FBO, and your passengers can look out the starboard side in peace.
Overall, it's a great "point A to point B" option. It doesn't get you there at quite the same speed or in the same level of style as the Citation X, but it can get you in and out of places the Citation can't (and it's genuinely fun to fly). IMO, this one and the X are the two best business jets in the sim.