If you challenged me I'd think you were a weirdo lol
I don't do it as a rule but take this example; if there was a disabled spot outside the cashpoint and nowhere esle nearby I'd certainly use it.
If you challnged me I'd call you a weirdo and laugh.
If you challenged me stronger you'd probably end up being able to use the space legit lol
Would I challenge someone? Not unless I was just about to use it and had a badge.