@jwildeboer downsides: rotational mass and smoothness of ride. The contact surface is more than 0.5cm thicker than a regular tire. Doesn't flex over small objects as easy as a puncture prone tire.
Pick your poison. I like Schwalbe Marathon Plus
Can confirm.
@jwildeboer yes! I've been commuting forever on marathon plus tyres. I've recommended them to several people and none of us have any regrets. The occasional roll over broken glass just doesn't worry me.
My middle kid went from a puncture nearly every other week at uni to no punctures in a year after fitting marathon plus MTBs on their bike.
I'd love to try the winter tyres, but here in the south of England it's not worth it for the few days I might need them. I generally just walk instead!