Ubuntu :: X Server Running Only An NX Client?

I've been using NX to login to a remote machine (using the free NoMachine NX client). I've been pretty happy with it, but I'd like the ability to run it as a separate desktop, rather than a window within my existing local desktop. I think I'd like to be able to start X Windows with only the NX client running, either in another virtual console (VC) in addition to my local desktop or perhaps sometimes as the only desktop running. My first thought was to go to another VC and start an empty X Server with only the NX client running with the command

Code:
xinit /path/to/nxclient -- :1

That seemed to work, except that just as the remote desktop is about to appear the X server shuts down. It seems that the nxclient process spawns the child nxssh and then exits, and at that point X Windows closes because the command it was started with has ended. I assume there's a simple way to fix this by writing a script that will only terminate once all the child processes have terminated and calling that on the xinit command line, but I'm not sure how to do that.