> I would be very uneasy with a setup that meant I *had* to stop to get anything to eat.
Very true, and I agree.
On day walks I just put the tarp up.
On longer walks - well, very often we find some shelter. Around the Blue Mts here there are cliffs everywhere, and where there's a cliff there might be a cave - well, a small overhang anyhow.
Otherwise, we do carry a range of biscuits, including some 'sweet' ones which we normally have at lunch. Been a few times in pouring rain when we have stopped, hunched over the pack and got out the packet of sweet biscuits, broken off a handful each, closed the packs and continued walking gently, while munching.
Just cold - not fussed. Put something on.
But yeah, some flexibility is needed.