No experience with them yet, other than trying them on. But I did just get a pair of the SD rainpaints to replace my Reeds - for the sake of saving 3 oz., not because my Reeds were worn.
Rainpaints are very much a "just in case" item for me. Rarely actually get worn, but just enough chance they might be needed that I usually take them. And they are the only pants I take besides the ones I'm wearing. These SD seem to fit that bill better by simple virtue of weighing less and I see no reason they won't work just as well when actually used.