Somehow, I missed this post last week. Sorry for that.
Check out David Chappell's
blog post on this topic.
I haven't used SCA and I have only briefly studied it. My knee-jerk reaction to it is, "why do we need one more set of enterprise architecture specifications for SOA??" when we've got
SOAP, WSDL, WS-*, and BPEL.
But, IBM is big on SCA. In fact, I think they are more focussed on SCA than
Java EE at this point. So, I'm sure it will get some traction.