We don't have webservice support in the ESB just yet, but it will be coming soon - will be in the codebase within the next few weeks.
At that point, we hope to have some tools in place within the ESB that will help you expose a webservice over a number of protocols i.e. enabling an FTP/JMS/etc based client to invoke a JSR-181 based service. It sounds like this is what you're after (if I read your post correctly).
Unfortunately we don't have an example of how this can be achieved today. However, it is fairly straightforward. You'll need to create your basic client-side WS consumer (using the Axis libraries are fine) and include that code in an ESB action and then wire that action in via the jboss-esb.xml. In the future, we'll have an out of the box action for WS invocation but today you have to write the typical WS invocation code yourself. At one time Axis generated all of the client side code for you but I've not looked at it in a long time.