Replying to Rossignol FKS pivot 120

Hi guys,
so i've skied Look pivots exclusively the last few seasons and just bought a new pair of ON3P Jeff 108s and am frantically trying to buy bindings before my first trip this year 16th-23rd Decemeber.. i only have one guy willing to sell to me who is a 4 hour train journey away :'(. but they're Not LOOKs, theyre called Rossignol FKS 120s - ideally id like a binding that can go up to a 13/14 din as im quite heavy - all my other skis are 15s but set between 8-11, but im willing to make that sacrifice due to the time pressure. the main question is do these operate and work as well as pivots do? Ik LOOK is a part of rossignol so idrk why these are even rossignol?
sorry if this is a stupid question but i just want to make sure they're good before i take a 100£ 8 hour round trip to get these bindings?