I like it. I wouldn't buy one because I'm not in the market for that kind of bike, but if I was the limited performance and vibration wouldn't bother me. It's what you'd expect from a bike like this, which is essentially an authentic retro with a reworked period engine. If you wanted to go retro in style only but have modern performance you'd be better off with a Speed Twin or a Thruxton RS. But they're retro lookalikes with modern engines. The Norton is the real deal, which is what people will buy it for, though it must be a limited market.
I think the otherwise exquisite detailing is let down by the cheap plastic fluid reservoirs and plastic indicators and the mirrors which look like those universal commuter hack jobbies they sell in Halfords.
That said, the mirrors appeared to be show a clear image, but these parts look like afterthoughts to me.
It's not for me but I can understand why some people would want one and would be willing to pay the premium for a piece of nostalgia hand built in the UK. I'd have a Thruxton RS myself, but I'm glad the Norton exists.