In reply to Rob Greenwood - UKClimbing:
Agree with all of that. I had been aware of the actual failure methods of ropes, issues with cut resistance etc and saw the cut resistance machine/demo in the flesh at Outdoor 2019. I was pretty impressed.
I have a Swift Pro Dry as I saw a benefit in having a skinny-ish triple but the protect version would be an ideal alpine single rope, all those running belays and running ropes around natural features whilst traversing ridges etc. As my Beal Cobras are down to 40m each I might be dusting of the credit card for a pair of Starling 60s......