Re: So for a while now...
"Now, I know there has to be a down side to it. I just don't know what it is yet."
I don't know either, but I do know that the Samba people have put in a lot of work over the years trying to find interoperability compromises between the Windows and UNIX rules for filenames, user identities, security descriptors and locking semantics. It more or less works, so if Microsoft have studied Samba's efforts in detail and put in a similar amount of effort in their NFS client then you'll be fine. (That's not impossible, People like Ned Pyle do appear to be very familiar with Samba.)