Upon request, I've uploaded a mini example application here:
https://github.com/vancegroup/vpp-examples It's what seems to me to be the smallest fully-functional haptics application for the Virtuose, using the vpp.h header: it creates a spring that attempts to return the end effector to the position it had when the application was initially started. It is intentionally simplified.
Note that as of this post, I haven't actually tested this with a real device, just the simulator, but it's based on code I've run on the real device.
Contributions (fork/pull request) with any fixes, and additional similar examples, welcome!
Ryan