The 6-long one [0] is just as long as the industrial version. It's just plastic and lacks mounting ears.
What do 6-outlet strips look like where you're from? I'd never considered British ones to be a problem because you throw them behind the setee or under a desk, and probably because it's all I've ever experienced. Also, in practice you usually only want smaller strips with 2-4 outlets, where the size matters even less.