Working on breaking these in. I left them in the case tuned below pitch, next day tuned up to pitch...all over the place, they are starting to be stable.
These added a more bright tone to a fairly dry sounding Spruce/Cypress blanca guitar. The normal tension feels a bit tight comparable to the D Addario hard tension, perhaps a touch less. I am sure they will stretch a bit.
Here's a little noodling...recorded with an integrated apple laptop cam...not high res but you can get some ideas. No nails, just flesh. The G string sounds nice, its not tubby. I can see why some might want singles of these

The highs ring and sing a bit more on my guitar. I like the response.
I will try them again but I can see how they would be a love hate kind of thing. As to durability no snaps so far. A touch bright and warm. These would be a good set for a player coming from a steel string guitar, since the string sizes are more thin like steel string. But they sound nylon like, maybe a hint of carbon character, but mostly a snappy sparkling bright string that rings out. Perhaps these strings favor flamenco voiced instruments?
https://www.youtube.com/watch?v=wzuhgSLb-MU