I agree, continental manufacturers have to account for customers who have working overhead systems running DC, not uncommon over here, as well as the more recent DCC systems. Very few of your (UK) customers have live overhead systems so there is little point creating a functionality in the hope that people will start putting knitting up.
The magnetic switch could have many other uses, such as switching tail lights on and off. I was trying to raise the point that a visible or hard to access mechanical switch shouldn't be a constraint when there is a more discrete solution.