Using Web Services in the Flex Mate Framework

Question

I am currently trying to use the "Invocation tags" of Mate to call my web services and delegate the WS-responses to my fault/result handlers. I want to use the generated proxies, provided by the Flex Builder, and not the plain <WebService> or <WebServiceInvoker> tags.

I actually failed using several techniques:

1. <WebServiceInvoker> does not work with the generated proxies.
2. <AsyncMethodInvoker> needs some complicated successType that I could not get to work with the WS-calls. And defining the events seems redundant to me. I want it simple and easy to read, the code will be touched by other people than me!
3. <MethodInvoker> can't use instances, and it also can't handle the proxies' AsyncToken
4. <DelegateInvoker> Looked fine at first. It calls the service but doesn't fire valid result events (infinite busy cursor). Even though i can successfully bind to the XYZ_lastResult of the WS-proxies, and a WS-call results in getting valid data from the WS-backend, the <faultHandlers> and <resulthandlers> are not executed. There is some solution for the DelegateInvoker that changes code in the generated proxies, which i definately do not want to do!

So here is my question: Is there a simple(!) way of using default Flexbuilder generated proxies with the Mate Invocation tags?