“The shockwave rider” published in 1975 does not use the word “cyberpunk”, but has many of the genre defining themes, such as a globally connected world, computer networks, hacking and small groups facing off against corporations. It’s not as pessimistic as more modern stories and i don’t remember how much capitalism is present, but published today it would definitely fall into the cyberpunk genre.
Definitely the way to go if you don’t want to spend more time painting the minis then playing with them, but still want them to look reasonable. It’s incredible how much even a single dry brush on a base layer brings them to life. Maybe the only caveat is that some miniatures are not designed with painting in mind and don’t have the textures and structures that give the depth. But even then the worst you will get is a not really improved mini and some spent time.