While the strength/diameter ratio is fine, it is VERY expensive (e.g. 4X price of Danville), slips on the hook too much, hard to cut, harder to handle than normal thread, cuts materials if one is not care with tension, and oh yeah, it is really expensive (worth saying twice). These kind of threads have been around for several years now. The last time, the fad was driven by the European Czech nymph crowd touting its virtues (e.g. Moser's Powersilk). Useful for certain tasks, but a very poor replacement for every day sort of tying thread, in my mind. YMMV.