Yeah making a one giant JAR with all the Axis 1.x dependencies is a good idea. I have done that as well in the past.
Axis 1.x is one of the few web service frameworks that support the old RPC style encoding.
In case anyone else wants to use servicemix with an RPC/Encoded web service I wrote up a little blog post with the poms and stuff you'll need:
Thanks for sharing this with us