I would be ok with mounted dispensers.
I travel in Europe where the Crabtree dispensers appear to be the norm.
But...
- product quality has been reduced
- my skin for the first time shows allergic reactions to these body wash/soap products, so now have to bring my own
- I have found the fittings to have come off the wall at various hotels I have stayed at

I like the dispenser idea, but the execution of it does not work for me.