In this video walkthrough and tutorial we show you how to install Windows 10 on a Mac using an external SSD and Boot Camp drivers.

Is there some nuance to cloning encrypted disks I am missing? My only guess at the moment is maybe if I boot from a live disk and copy the disks that way, that way the source SSD remains locked.

How to Clone Your Hard Disk to an SSD Using Clonezilla Clonezilla is free and is OS-independent drive cloning software.