Back in the very early '80s I bought a couple of sets of current Mk 3s rather than wear the 10th hand Mk1 rubbish the sqn used on exercises. At the same time it was quite common to see studes etc wearing the Mk 2 top as a fashion item.
Best I saw was this gorgeous female on the train who was wearing a look-a-like Mk3. I kid you not, it was the pukka design, same colour, but properly lined without any charcoal.