… as driving to shul on shabbos invovles transgressing a number melachos doraisa that are mentioned bfeirish
were as wearing a slit below the knee is not uncovering any erva and is only held to be ossur by some because THEY HOLD it is to flashy,
it is an opinion not a fact,
you obviosly hold by your rov’s opinion wich is fine, but if another rov has a diffrent opinion then your rov there is nothing wrong with somone holding like that rov.