a1ive has enhanced grub2 and has added new commands such as map, partnew, dd, etc. for UEFI.
He has also created the grub2 File Manager scripts, which use these new grub2 features as well ipxe wimboot and chenall's NTBOOT to allow us to DIRECTLY boot from unaltered Windows Install ISOs (with ability to load an XML file), .WIM files and .VHD files for MBR\Legacy and UEFI64 and UEFI32. We can also boot from just about any Linux ISO because you can choose the 'EasyBoot' method of using 'partnew' even under UEFI.
I have also added a Secure Boot UEFI64 set of files, which should allow you to Secure UEFI boot to his grub2 (even though it is not signed). This allows us to run ALL grub2 commands without restriction.
You can also use the partnew command to boot from an Ubuntu-based ISO with persistence.
If you just want to try the FAT32 UEFI boot files - see here for a download.