These strings were used to trial a (fretted) bass in this ultra short scale.
They work, and provide an interesting & &appealing sound (but of course nothing like a double bass, as some people would have you believe). Particularly amplified you could take one of these miniature basses to a gig, if transport is an issue.
For me the finger setting on this short scale is a bit of an issue, but that has little to do with the strings. Of course the tension is also exceptionally low.
Quality-wise, the only issue is that these strings continue to stretch. So you keep on tuning, and the tension gets ever lower, and you get more & more string on your pegs. But none of them has broken yet, even after years.