It's nowhere near as hard as Joux Plane, particularly from the Samoens side. I'd say it's more like Col de la Colombiere or the climb from Morzine up to Avoriaz. Forclaz has some steep bits, but it's quite short.
Ha, the last 4km of Colombiere aren't that easy! Think I've beaten myself into far better shape this year at least. I'm getting rather overexcited at the moment anyway.
Yeah, last year when we stayed in Cham we kept meaning to take the train, but always found the will to get up the valley under our own steam. Not done Forclaz yet, can you compare it to any other climbs in the region? We did the climb to lac du Emossin last year on day 1 which was a slight shock to the system. Hopefully will get to do Joux Plane this time round, which will definitely need a train trip home I think. And Pierre Carrée down that way too, that looks fun.