Sorry this took a bit. Stuggling with technology....
....sorry also that that the click's still in there. In my rush to get it out (ooh err, vicar!) I oversaw this fact. Hey-ho...
With all due respect, as wobbly as DB can sometimes be compared to it‘s earlier self, a poor day on the Deutsche Bahn lies well above the level of Southern Rail‘s highest aspirations.
Maybe a narrow strip of material on the waistcoat (if the waistcoat is black even easier) sewn on one side and open on the other so the buttons are covered but you can still button it?
Couldn’t one of these be the solution for those BC members who often see an instrument and say “If that only weighed 3 lbs, my poor back“ etc? Then it wouldn’t matter if it weighed 20 lbs.