Good to hear these are durable rims.
FWIW, I had a set of old (late '90's?) Mavic Cosmic Expert (the all-silver version), 18-hole front and 20-hole rear.
My riding weight varied from 210 lbs to 240+ during the time I had these wheels. Never once did I have the slightest problem or hiccup from the wheels. Then I ran over them following a groggy early-morning ride...
I thought I could get a similar product from a Ritchey 20-spoke hub/rim, but the rim just isn't strong enough. I was having to true them after nearly every ride. Those will now go to the wife. She's half my size.
I'm now on a set of Zipp/Velocity Deep-V's (20F/28R) and I'm
very happy after my first few rides. The hubs are smooooooooooooooooooooooth as buttah, and no rim stength issues at all.