I have used the 4 NA and 2 SWUs from my E kit. Used the NAs for a YLW-YYZ-YLW and the SWUs to upgrade Mrs T YVR-LHR-YVE on a U fare. I now have 2 more SWUs that I am unlikely to use and will get 4 more from my upcoming trip to AKL.
7 of us are going to Vegas in Dec, would be nice, but not expected to be able to upgrade more than one person at a time.