I did exactly this - even down to using Apple Magic keyboards, because I happened to have two of them. The only difference was that I had the keyboards angled

I did exactly this - even down to using Apple Magic keyboards, because I happened to have two of them. The only difference was that I had the keyboards angled ‘out’ rather than in, propped up at their front and middles, so that my wrists were higher than my fingers and thumbs higher than my other fingers, if that makes sense. Eventually I moved on from this to a single keyboard specifically designed to support this sort of setup, but two small keyboards was a great start!