I tried it after using Emacs Magit for about six or seven years, and jujutsu is really easier to use than git and useful if one wants a tidy public history of changes (Linus Torvalds recommendations on that linked here). Plus it is fully compatible to git as backend - other contributors will not even note you are using it.
Oh my god this is amazing. Thanks for this.
I would assume a merge conflict if the submodules were changed in both branches from the base… but it’s probably not that simple, is it? I’ve never tested it.