You didn't mention that it was from a legit source like MSDN. In that case, yes, it would work fine, but as I said before, you could have had the very same result on your own without waiting to get anything from him.

If it was me, I would have done the install on my own, and just updated through Windows Update. I'd still probably ask for the .iso, just to have for future use, but there's no real reason to hold off and wait. Whether you use his disc or create your own, the end result will be identical.