You're no lightweight. If you really need the couple of percent less rolling resistance a Martello has over a Mazza, then go for it.
I've never owned a Martello but they came standard as a rear on a lot of Norcos for about 2 years. I know 2 people who hated them as a rear and even rode with a mate on an Optic that had Mazza/Martello, we plugged a puncture on the Martello that ride then put a tube in it 20 mins later.
Whatever you decide, get the enduro rear. They now also have a Race tyre with soft compound.