we started skating at almost the same time. I started at about 1984 in Freiburg. There are also some more vert roller skaters in Germany and even in Freiburg. They just don't raise their heads!
On Saturday, I had discussion with another vert roller skater on the subject how many active vert roller skaters there are in the world. I assumed that there have to be hundreds!
Do you still have contact with Martin Broich and Thomas Kallack?
I think you are right about the year when vert roller skating dropped out of the Münster Monster Mastership. But we could research this particular question. Maybe I have some old Monster magazines from this time ...
It's a pity that you didn't show up here sooner. We had a vert contest here in Freiburg and specifically called for "Skatboard, Inline and Rollerskate". If you had come, too, there would have been two roller skaters. Maybe next year?
There will be a report on this event at Sk8Mag.de.