Very much so. 1200N DS I think or was it 1150N average. NdS is about 74% of that. I use them every day. The bike is my daily commutor and audax bike. The front wheel with matching hub is about to get it third rim as I keep wearing them out. Lots of use and now they carry loaded panniers often.
Yeah, they couldn't take the tension they were rated at.
What was the final tension on your 16:8 sl23/Royce ti build; are they still running?