I mean I love the idea right? Software FDE comes with a performance hit, as well as increased wear on the SSD.
With hardware FDE the data written to the raw flash is always encrypted, the AES key is just 0 by default. Macs work this way AFAIK. With "hardware bitlocker" you just change that key (on a fresh drive).
Full performance, better security. Seems awesome huh? Well being outside the happy-path when it comes to hardware configs on free software is just asking for trouble...
That sounds way too exciting, even without that involved I keep my Windows install on its own disk.