If you are after a simple status whether computer is still alive and the progress of cloning then you can have a look at Ghostcast server progress, which will tell you precisely where cloning is at.
There are two winpes that are shipped with GSS 2.5 - winpe and winpe-512, both are stored under the mentioned folder. However they do not contain regular simple WIM files to boot from so I am not sure whether or not they will work with what discussed in this article. However I strongly suggest you do not use any of the WAIK tools on them - if something goes wrong you might be on your own :)
If you after injecting extra files (exe, scripts) into Winpe I suggest you use Ghost boot wizard for that.
Hope this helps.