In reply to Darkinbad:
Not really a VF route per se, but the path up to Tete Aux Vents from Tre Le Champ, or Argentiere, combines some good steep walking with short sections of quite exposed ladders and rails.
I unexpectedly came across these descending from a long run a couple of years ago, don’t mind admitting that I shat myself a bit!
Could combine nicely with family walks particularly if you throw in the lift from flegere to reduce mileage.
Some footage (not mine) here:
Post edited at 11:44