6 minutes seems about right to me for easily accessible items. However, if you are testing IEC leads in a typical office environment it can take much crawling around under desks to identify which plug in a sea of disorder is at the end of the lead in question...and unless you want to then untangle the lead, you have to do the inspection part on your knees with a headtorch. Then, having identified both ends of the lead, you need to extend it with a known "good" lead so you can get both ends to the tester. This often takes a lot longer than 6 minutes! Sometimes I put a sticky label at each end so that next time I can easily identify both ends quickly.
Being retired and just doing this for fun, time is not really an issue for me, but it's no way to make a living on its own.