Hi Shaun,
I am in the east part of the country near the German border (Aachen). Nice to hear from you. I also was and sometimes are enduro riding. We have nice roadbooktrips here and 3 or 4 times a year we book a roadbooktrip in Belgium.
Getting older I want to go for slow driving, with some nice obstacles but I am a newbee in the trial scene. So what, I think this vintage trial bikes are the best way to start with.
Good luck for your Montesa search.
Maybe we see ourselves in Trooz or Gressenich (Germany) for ride.
Cheers Andreas