Tonneau is my first port of call. Always has been.
I was without it for a short while after the Rollbar was fitted, waiting for Austin to start at Williams to mod it and really missed it.
If alone then it's half opened for myself, and in winter it maintains a warm cocoon effect.
In light rain it's fine, and storm cover used if it's heavier when parked up, and hood on in bad rain. I have a trad hood with lift the dots.
Tonneau is easy to roll/fold out of the way and not interfere with seat belts - or the dogs if they are in the car!
The only niggle is water can get in when side screens are on and rain is heavy but towels placed to catch are ok. Be nice to have a fit that allows side screens though.

Plus Four MY23 Furka Rouge