Yeah, they do need to clean up the installer a bit. It's also not quite turnkey for a Windows dual-boot.

Mind letting us know why or how? When I installed it almost a year ago on my desktop, I did install it as a dual boot option with no issues. Of course this doesn't mean there aren't issues I just didn't run into. I'm also not new to Linux and didn't pick a fully default install, if that makes a difference. So I could've probably fixed it if it did break, but it never gave me any issues.

The only thing that I dislike, and that could probably cause issues, is that for my installation the mount point for the efi/boot partition isn't specified in fstab using a uuid, but using the device name (which isn't fixed and can change with hardware changes). That is a very weird (and unnecessary) decision IMHO.