I've got an Ignition Club bass, which is identical to the violin bass other than the shape.
It needed a decent set up (intonating it was tricky*) and I put on some (expensive) La Bella flat wounds on it for extra sixtiesness. It does 60s Garage Rock, 'Beatles' and folky/acoustic very well. My main bass is a Precision - the Horner serves really well as something quite different to that.
Is it versitile? No.
Do I like it? Yes, a lot.
*If you get one, I'd be happy to pass on what I learned about intonating these. Drop me PM