So basically you don't think Damian's strings will have better longevity than normal gut.
Was it the varnished or the natural gut strings he sent you for the video?
It doesn't say on his website specifically about the tuning - I thought a little strange as that must be his selling point? I hope I went to the right bit of the site - it only lists varnished or natural gut under classical guitar, not 440... Maybe that's the only thing he makes now?
What's the difference between varnished and non varnished? Sound quality? Longevity? Feel? Longer lasting for nails/fret? As it seems the sets he puts together selling as a pack are the varnished ones, is that seen as standard amongst gut string players?
Quite expensive though even before postage, but maybe worth a try for when my current stock runs out...