So I need to run windows on my 2016 rMBP, and I don't have any storage to spare. I'm looking at options for running an external/portable boot drive. The ideal solution in my head is a thunderbolt 3 (i.e. usb-c with thunderbolt) to m.2 sata adapter. This would be so amazing, and is so appealing to have windows stored on such a portable device, and the idea of it has me exited about the io that these macs support. However I can't find such an adapter, i'm surprised i would've thought a lot of people could make use of a tiny external ssd with thunderbolt 3 speeds. Anyway i'd appreciate any suggestions, what would you do?