Our 2017 model Boxster 718 has a folding "soft top" that is fabric, but is clearly multi layer and yet it has a glass rear screen. It fits tightly, everywhere and is powered and without a fastener in sight. It is totally waterproof.
So, we have all the benefits of a fabric soft top and a hard top, but sadly it isn't a Morgan.
This winter the Boxster is a daily drive, something the Morgan never managed.
At the moment this 70 year old is somewhat conflicted by the two cars. So for now, the Morgan is in the warm, dry garage and the Porsche sits on the drive in the rain. One will have, for simple economic reasons, to go.