I bought a racquet pre-strung with this string and while the control and spin/power levels felt good, I did get a tennis elbow. The racquet was strung at a high tension 27kg. Just be careful with that one if you don't know what you are doing.
Dennis, 25/7/20,

This string is very good with tension maintenance. You could use it for natural gut hybrid very well, as it will hold tension for long periods of time. The downside of this string is, it is very rigid. If you want to use a full bed of this try some lower tension, especially if you use it in a a small head or tighter pattern such as 18x20. If the racquet has a small head AND tight patter it is mandatory that you go lower in tension. Otherwise it is guaranteed you will get a tennis elbow no matter how strong you are. Also racquet flexibility matters a lot. If you play firmer, stiffer racquet, go lower in tension. Or else... tennis elbow is guaranteed. I used it a Wilson 6.1 si Stretch 95 sq. inch and I strung it at 23kg mains and 21 kg crosses. And it felt awesome.
Ovidiu, 22/1/20,