Run the pork long enough and the strands brown instead of staying pale, and you have rillettes de Tours: the darker, drier, more fibrous reading of potted pork from the Touraine, where the meat is cooked until it caramelizes and shreds rather than slumping into a soft smear. The build is plain on purpose, a crusted baguette split lengthwise, a thick layer of the Tours-style rillettes pressed into the crumb, and almost nothing else.
The dryness drives everything. A browned, less-fatty paste does not slick the crumb the way a loose one does, so a thin film of beurre demi-sel is welcome here rather than redundant, bridging the dry shred to the bread. The flavor stays deep and salty from the long cook, so the counterweight stays sharp: cornichons or a stripe of strong mustard against the richness, nothing more. The bread has to carry a real crust, since the filling offers no structure of its own, and the sandwich eats best at room temperature, where the residual fat softens and the strands turn supple again instead of chalky.
The Sandwich Rillettes de Tours belongs with the cured-meat builds the catalog groups under Sandwich Saucisson & Charcuterie. Its contribution is the dark, dry, caramelized benchmark the looser pork version is measured against.