if he's wrapping it around then yeah he's stitching on top (on the outside) (you can see a lip on the first pic also so i thought he was - just wanted to see exactly how he was doing but that other pic doesnt help)
i just thought some cut and stitched back together (example below - big pic so can look closely)
how exacty is he re using the original thread?
i know its possible he could use a bit (but thats ALOT of hassle) but he's got to cut it somewhere then thread his machine up - would be lucky to get one side done
clients happy is alright if they dont know what they're on about - most dont "thats management speak, david"
Mine is done exactly like on that runway pic you posted: they cut the hem out, then stitch it back on the jeans, but wrapped around the raw hem.
Sorry it unclear but I think it shows pretty well on my pics.