I test rode the Ridley a while back. I was hell bent on getting one with the Flandrien scheme. The Icarcus convinced me not to. I came away from my test ride very, very underwhelmed. It felt very sluggish and flexy, and I'm not a terribly heavy or powerful rider (160 lbs). The whole bike just felt a little dead.
I still have my '08 Allez and I love it to death. If I were in your shoes I would pick the Allez each time. It feels much more nimble and it's one of the best cornering bikes I've ridden.
But that Flandrien paint scheme is incredible looking IMHO... If you decide to go with the Icarus I would look into that paint.