After lusting for these for almost a year, I bought a pair of Cervelo Test Team A3s on clearance as a Chrissie gift to myself. Coming from Pearl Izumi Pro Road IIs, I'm amazed all around.
The fit is spot on, thanks heat-molding and the wide toe box. The Bont rep recommended using an aftermarket footbed, so I've continued using my heat-moldable Soles insoles. While the Pearl footbed is slightly concave (for stiffness, presumably), the Bont is perfectly flat, which is a lot healthier for my feet. I don't need to buckle down as tightly because the shoe matches the shape of my foot so accurately. Although the A3 sole is the thickest of the three levels, the stack height is still ridiculously low, and the cleat holes are a farther back so I'm back to my preferred position over the pedals.
The only drawback that I've noticed so far is that they feel colder in winter--the threaded inserts for the the cleats protrude through the midsole and conduct that outside cold a lot closer to the foot. Time will tell if that translates to overheating in the summer.