I think it has to do with the phenomenon "retro chic" or whatever it is called.
I confess I am a victim myself when it comes to my view on electronics or anything battery driven. I like a map and compass. No torch, no emergency beacon.
All my watches ( I collect) are mechanic.
I just remember another negative with the old 35 and 70:
When the lrather straps get wet, they swell. A sure way to break a nail or two, undoing them. In winter if the pack is stored in a tent or cabin with plus temperature, and gets wet, the leather will freeze. Impossible to open, can
break too.
But I guess that is not a problem in UK!
Do not read me wrong, it is superb quality sack. But know the negatives too before you spend your hard earned cash on it!