I use these (and EJ80s, which appear to be the same thing in a different package) on a Freshwater octave mandola. I'm mostly a chordal player so I want strings that respond well when I hit them hard -- these lose their initial janglyness fairly quickly, so they work well for me. Playing at a couple of sessions a week, I get through three or four sets of these in a year.
The top two courses are a bit light; I'd like it if they did a 46 32 24 14 set. But close enough!