bpel depends only on jbpm.jar, so nothing else is needed. I added a comment to issue 541 about sharing a single jbossas configuration or creating two separate configurations.
Sharing a single configuration is relevant only if we want to ensure jbpm and bpel services can run side-by-side in the same appserver instance. AFAIR, none of our users/customers does this (they use either jBPM or BPEL, but not both). Do we want to cover this case?
Yes. We should go for running jBPM BPEL and jBPM jPDL side by side.
I think it is not a problem. So we should be able to do it.
If it turns out to be a big problem, we know that we cannot claim support for it and we will revert to two separate installations.