I had to try these out on my ES-335 Yamaha, which I use for rock and jazz.
I have long wished for strings that kept the bending properties that roundwound strings offer compared to flatwounds. These are definately the best bend friendly flatwounds I have ever tried. Compared to all the major brands this is the best.
But, then there is the sandpaper effect, which unfortunately makes me wanna take them off again, which I will do.
The top E1, A2, D3 are really rough as sandpaper. I feel like the only trick is to carve off enough dead skin for the sandpaperstrings to be satisfied.
Its a shame, for they are so promising and the tone offers mids, that are'nt normally found in jazzstrings. Makes my drives sound better than any flatwounds I have tried.
Hope that they make a better smoothing of the top three strings and reintroduce them soon.