Yeah, looks like it provides nice human feature detection.
The commercial license is $25,000/year, which is a wee bit over Team Vuo's budget ;) However, if someone else were to implement some OpenPose nodes for Vuo non-commerically, they could use the OpenPose library for free.
The documentation for the OpenPose Demo says that it can output JSON. So if you were to record a video and write a JSON file from it, you could then play back the video and the JSON data in Vuo.
Or if someone has created an app using OpenPose that outputs OSC messages, Vuo could use the tracking data in real time.