I wanted something to bow my electric guitar strings, while full of reverb/delays, so I could dive more into drone/ambient in an organic way, compared to playing my synths.
I am not that experienced with the approach, but this thing did what I was expecting it'd do. Adjustable tension, pretty solid build quality, I got what I was expecting. Don't have experience with expensive bows to see the difference, keep that in mind.
Overall, it did its job for me, yet that was slightly different from what you may want it for.