The AIA Project Delivery Knowledge Community (PD) promotes the architect’s leadership role in all project delivery methods by assembling and distributing knowledge and best practices for a variety of project delivery methods, e.g. design-build (DB), integrated project deliveries (IPD), and public-private partnerships (P3).
It is my experience that IPD projects (even those with an IFOA) do not necessarily lead to less hours or effort. There are too many variables unknown about your project but generally it's roughly the same. The difference I've seen is the % of hours burned are typically greater earlier in the project (meaning less CA time, more SD-CD time). You may decide to lower your fee (lower initial profit expectation) if you are able to negotiate a performance bonus leading to higher potential profit if agreed upon metrics are met. Your fears are valid – it can be really good, it can also be really bad. It all depends on the trust and culture of the IPD team (plus a well negotiated contract).
Best of luck,
Brian Zeallear, AIA, NCARB, DBIA Principal | Architect NBBJ 223 Yale Avenue North SEATTLE WA 98109 Direct: 206.223.5107 Mobile: 206.818.2849 nbbj.com | meanstheworld.co