^ When everybody was going ga ga over CF frames, many Ti Builders thought they had to do something to stay competitive. Hence, the Cielo in this thread, the Merlin Proteus (CF with some Ti bling) and various Ti/CF frames from Litespeed, Seven, Serotta.
After awhile, I think most of them have realized that adding CF to a Ti frame doesn't result in any advantage over a well made all Ti frame. (other than perhaps a cost advantage of manufacturing a CF rear triangle) And that rather than try to compete against CF by adding CF to Ti, that they should concentrate on building good Ti bikes, and service the market that remains for good Ti bikes.