sks revisited indeed.
I put a pair on a touring bike last year and while I had to take my time to get it sorted out properly before cutting the stays, the overall quality of sks fenders and hardware has held up very well on my bike that I used to bike through Central America.
I have used planet bike fenders on other bikes and they work fine, but sks does seem to be of a higher quality, but yes, their system does have a certain pita aspect--but, I expect these fenders to last as long as my 1990 sks fenders that are still going strong.
and yes, that Rivendale video is very well done, I found it when I was looking up hints for mounting mine.