The main mechanical difference between my suggested toggle is the fact that it automatically turns back on after a single attack with it off, whereas other toggles stay off until you turn them back on. I believe most toggles default to on, so it'd be consistent in that regard.
The auto-toggle idea could work well for non-lethal attacks. By the way, that toggle defaults to off, as do metamagics and maybe also riposte? There’s little consistency in the toggle system’s UI or gameplay. I hope patch 9 cleans some of that up.
Edit:
I dunno, but where I live some people started Christmas weeks ago....
Wait… You live in the future?!