One would
like to think that IHQ has investigated hiring a management company and found it more economical to do it the way it's being done. That doesn't necessarily mean it's safe to assume. If they have done the research, it should be easy enough for them to produce it for review.
(I can't beleive I'm typing this, but...) I agree with GammaZeta

- It's worth looking into.
If anyone needs to find me, I'll be ice skating in Hell.