I haven't interviewed for EJA, but I did go through Flight Safety for the Sabreliner at STL. It flies just like a Sabre. They had three different sims there, a 40, 60, and I believe an 80 was still being put together (or it was something experimental; I never got in it). The 40 is a pretty hot little thing, and the 60 is more of a gentlemans airplane.
It doesn't have any real quirks; it will look old fashioned when you get in it, because not much has changed since the late 50's with the design. When I was there, the sim instructor had us fly it through the St. Louis arch, for kicks and grins. He also had us "fly" it while he levitated the airplane from the surface to about 2,000 AGL when setting something up. It could bank and pitch, but with the visuals, we were climbing out of a hover. The sim is just realistic enough to give the experience an odd feeling in the pit of your stomach.
I don't suppose they'll mess around with it for the interview, but most of the folks there are grey heads who have been in the industry a long time. Everyone seemed quite congenial, and the folks at the front desk bend over backward to help out.
Go a little early. The place isn't as easy to find the first time as they make it sound. Good luck.