I was at a smallish venue yesterday and looking for the loo I saw the door with one of those half-trousered / half-skirted figures on it.
Hackles rising, I then looked closer - and saw on the left another door, with ladies and baby change sign.
On the right a third door, with gents and baby change sign.
Then I noticed the mixed one also had a changing places sign.
Sorted. If a little venue can get their act together so absolutely everyone is dignified and comfortable why can't they all???