Thanks for all the responses. Good point
djb about different rims. I have Mavic A719's on my Volpe (2019 frame I believe)
The Continental 42mm tires might be pushing it, so I think I'll order a
Schwalbe Marathon Mondial 40mm and try it out (unless someone can put me off this idea!). I have 50mm Mondials on a MTB but that riding experience is not so comparable, I imagine.
I'll report back as to how it works out.