Let us know when it get's published.
I lusted after a Darne from the first time I saw one in 1965, finally bought a R-11 as a retirement gift to myself and am just as impressed now as I was 40yrs ago. 5 lb. 15 oz. all steel and wood 12ga with 29" barrels what's not to like.
I have a V21 12 bore, 6lbs. Nicely made and very interesting, but "what's not to like" - well here's a short list!
Recoil high (I shoot 21 grammes only and it weighs 6 lbs)
Handling - very much an acquired taste, that I have never fully acquired. Its just too light and wand like for me.
Trigger pulls - only fair, and I'm told not easy to improve
Operation, though well made fitted, its not particularly 'slick' to use
I respect it for being well made, clever, and a genuine alternative ..... but its not by any means everyone's 'cup of tea' (or verre de vin).