In the context of agent-oriented methodologies, previous work has created a number of specific method fragments for use with the OPF metamodel and repository. These have been derived from an analysis of a large number of stand-alone agent-oriented methodologies. In order to evaluate the feasibility of this method engineering approach, a different AOSE methodology has been selected so that a scientific experiment could be undertaken. The hypothesis that the agent-enhanced OPF repository could be used without change to engineer any other AOSE methodology was proved false since two tasks for the creation of agents based on role modelling needed to be added to the repository.