Everything I intend to develop is based on OnTheGoSystems Toolset plugins that enable relationships between types and the ability to create a relational schema within WP..
I would like to use the Upfront theme with the Toolset plugins, to do this requires the theme to be integrated with the Layout plugin. The following is the link a page which clearly describes the changes required to the relevant php files.
It simply does not look feasible to integrate Upfront with the Toolset plugins. Can you have a look and see if I may have missed something and it is possible.
I will have to move to the Geneisis framework if Upfront cannot be integrated.