If I had the need I would use my 76 4/4 as a daily driver, the brakes are fine (and simple/easy to maintain) and the engine is very capable/solid (as used in some Escorts/Capris). In fact all Morgan engines come from cars designed for daily use and high mileage.
I am shocked about the dealer comment - name and shame!
Many on here use their's daily and love it. I would love the need to use mine daily.