I think it tends to depend on WHAT conditioning we are talking about.
Most people have no problem with "MA specific" conditioning - sparring, bag work, pad work, etc, but they tend to not care to pay for 30 min of calisthenics and 30 min of actual MA.
I've always been of the view that class should be about 10 min of "warm ups" - calisthenics- and the bulk of class should be DOING the MA and that means doing it FOR conditioning.
Spending 30 min of drilling the HB full force gives you very good conditioning AND works your MA specific pathways and techniques.
Psalms 144:1
Praise be my Lord my Rock,
He trains my hands for war, my fingers for battle !