Yes I have two flashes SB-910 and a Sigma 610DG which I don't like that much since I can't adjust the power much but can still be used. I will probably by another speedlight but probably not a SB-910, since I am not using TTL I just need something that can direct a burst of light at my subject There are good cheap flashes out there that even when adding the cost of a PW III is still cheaper than a SB-910.
I have a D7000 for a backup, very good camera for the money even though it is DX while the D800 is FX. I generally keep my 70-200 on the D7000 since it is not as picky as the D800, and use the D7000 as my backup/2nd camera.
This has actually been good as I am finding using speedlights may be something I would prefer/use more than the larger lights.