Steve Ross-Talbert has his fingers in a couple start-ups:
Hattrick Software focuses on Web Service Choreography:
He blogs about some of his reasoning here: http://pi4tech.blogspot.com/
The original WS-CDL specification was less than impressive, however, the concepts were right on. I haven't gone back to revisit the specs but I will. It will take people some time to understand the fundamental 'centralization' problem associated with BPEL. Until then, alternatives will largely be ignored.