no info on whether it supports hot swap, but don't need to complicate accessing an NVMe drive with full installation in an enclosure now. my only complaint, aside from the possibility it doesn't have hot swap is that you can only use NVMe M.2 drives, no SATA, even if they are 'rare', which is exactly why it would be good to have.
www.guru3d.com
NVMe M.2 SSD to USB Conversion Adapter From Timely Released
Handy, Timely has launched the UD-M2IN conversion adapter, designed to convert NVMe M. 2 SSDs into USB drives simply by inserting them. Priced at around 22 USD, it will be available from February 16th.