While this thread may be a little old, I can provide my recent experience with the Reserve PAST:
- Recruiters no longer conduct the PAST themselves. While they might be there, someone else (legally permitted) will proctor/monitor.
My recruiter told me this while I went through the process of joining an RQS.
- My PAST was conducted at a Reserve RQS unit with a crazy amount of people watching. There were 6 of us taking the PAST and I think there might have been 20 people watching.
Supplemental: Reserve units expect you to get to them on your own for their assessment. I had to buy airfare, car rental, hotel, food, etc. on my own dime. They did give me an MRE, though, so I guess that's something.
This was my experience with the PAST in Aug. 2016.