Supposedly, that's what the sales team says about their own flow, i.e., that it's simply a "back-up" plan if what you are doing and may be successful at works. I don't see how they can fault you for that. The back-up plan in question at Envoy/Piedmont isn't built with very firm cement though, at least not yet. Thus, any pilot not subject to that yet should think long and hard about starting over at the bottom just for a wobbly back-up plan like the present upgrade/flow projections at either carrier.