The left and right halves are actually independent: either one can act as main or sub side. So yes, this would work fine, you'd just need to arrange your keymap to only use one hand - which is trivial since everything is configurable through QMK using Vial or KeyBard (an improved, JavaScript clone of the Vial Web editor with some Svalboard-specific features).
In practice this behaviour is really useful: I put different keymaps for Windows vs OSX on each hand, and the keyboard uses one or the other depending on which hand is plugged in as master. Swapping is trivial, as the USB cables are interchangeable and magnetic :-)
In practice this behaviour is really useful: I put different keymaps for Windows vs OSX on each hand, and the keyboard uses one or the other depending on which hand is plugged in as master. Swapping is trivial, as the USB cables are interchangeable and magnetic :-)