Short intro: I've been using the 18-55 extensively as my (only) X-T2 lens and it's a great lens indeed - versatile zoom range, OIS and compact. Nothing to complain as a first lens, really. But.. despite the general possibilities of this lens for family-day-outs and everyday situations, I sometimes I miss that creative 'pop' in my images - and it seems the 23mm f/2 can deliver just that.
The reason why I'm looking into this particular prime is that I would like to develop and explore (black & white) street photography this year, and the primes seem much more suitable for unobtrusive and fast street photography.
I would like to avoid having to use flash when photographing on the street (duh!), so the extra aperture stops of the 23mm + high ISO capabilities of the X-T2 + manual focus + RAW shooting should provide plenty of evening possibilities.
Am I suffering from G.A.S. or is the 23mm f/2 a good first addition to my kit (e.g. before I look into wide + tele)? If any owners of both these lenses can share their experiences in a comment below, I'd highly appreciate it!