How should it limit him to one computer? Different external drives attached to different computers holding different volumes of the VI should be possible to my understanding.
It should even be possible to install the samples to the external drive, and the program files to an internal, and link the samples then from theinternal installation. A second installation of the program files on another computer could then use the samples from the same external USB drive, once it is connected to the other computer. The dongle won't allow for simultaneous use though. Maybe I'm not up-to-date with this info, but I think that is possible.
All the best,
PolarBear