I am afraid the power supply wont arrive until at least early next week so some of the questions I wont be able to answer until then.
That said, I asked the vendor to send me a couple of pictures and from them I can tell you a little more about the supply.
1.) I am not convinced it is a 10kV output. Looking at the model number on the back it's OL1000/602/12. According to the spec the 10kV model is the 103 version there is no 602 version(?!). Given the naming structure maybe it is a 6kV version that has been discontinued. I guess I will just have to wait to find out (Part of the fun of buying off eBay I guess - but at least the vendor is offering a full money back guarantee)
2.) I still cannot tell if this is a P or N output model (but the vendor told me he couldn't tell so that's not so much of a surprise). Given I cannot use it for my grid anyway its not too important at the moment (perhaps the '12' part of the model number is actually a badly written 'P'). Anyway, I am assuming the worst case scenario for now.
3.) The output port appears to be similar to a regular beyonet RG-8 connector rather than the PL-259 panel you have described. It doesn't come with a cable so I am hoping it is RG-8 as it should be easier to source. Once the system arrives I will open it up and should be able to tell you (show you) the internal setup.
4.) From the eBay image I can tell that it's only the blank panelled version. Of course, it would be nice if it had the voltage controllers for easy testing but I plan to run it remotely using the 25-pin D connector anyway. Speaking of which have you ever tried to use one of these remote connectors? I am assuming its pretty standard and being a software engineer I am tempted to write an interface for it if one does not already exist.
See image here: http://tinypic.com/view.php?pic=293znfd&s=9