We have been evaluating it. I have it loaded on workstation, but I haven't even logged on to that machine in 2+ months. I keep trying to attend the PDMLink Business Administration class, but PTC keeps canceling it for lack of students.
It took a while to install because the steps weren't fully documented. I complained loud enough that they fixed the Read This First guide in June to include the problem that was fixed by a TAN in May 2002!
The software looks capable of managing Pro data, but only with the latest
6.2.6 DSU6 build. One of the reasons I haven't used it much is that we have told PTC we will wait for V7 before doing anything more with it.
Corporate wise, we have one division with a 350+ seat Windchill application, but no CAD vaulting. We have also had discussions with NetIdeas on their IcePak Windchill implementation that ca do vaulting.