Sorry I missed this thread.  My son and I hit the trails in his 08 JKU along with my son's friend in a FJ Cruiser.  This was my first venture on the trails and it rocked.  I drove some trails Friday night and Saturday in the soup.  We couldn't make it up Dutch John Saturday, but my son made it up Dickey Bell Friday night; no lockers.
We also talked to a guy in a Hummer H3 that had Dynatrac axles front and rear.  He said he lived close to Dynatrac in CA a while ago and they were experimenting with getting all the electronics worked out.  Not sure what year he had them put on but the rig was awesome looking.