Two things:
Windows 10 will likely want to boot from EFI.
SIP will play all kinds of havoc if it's enabled during Windows deployment (it will for starters protect the EFI partition from WinPE).
Two things:
Windows 10 will likely want to boot from EFI.
SIP will play all kinds of havoc if it's enabled during Windows deployment (it will for starters protect the EFI partition from WinPE).