Thanks - think I've already discounted that as the chainstays are too short.
Marin do have some really interesting, left-field and often budget friendly stuff but sadly nothing seems really appropriate. The nearest thing I can find is the
Larkspur - love the chunky tyres and quirky, laid back pseudo-mixte aesthetic although I'm not keen on the short seatpost tube (and connotations for rack mounting) or low top tube junction (which would likely preclude FD fitment):
View attachment 779115
The main driver is seatpost tube to tyre clearance since I apparently have a very limited choice (i.e. one) of front derailleur and it's a bit of a porker.. which is what's apparently
hammered the final nail into the coffin of the CdF project.
As can be seen from the link, with the chosen FD there's basically 1-2mm clearance between the FD and tyre - that's with a 40-622 tyre and quoted 430mm stays on the CdF. 450mm stays would give an additional 20mm clearance which should be ample to get some guards in there.