Pijul needs a 1.0 release if it wants wide adoption. I don't understand why they wait.
Meanwhile, if rebasing on git is an issue, you should probably try stacked-git (https://stacked-git.github.io/). It manages commits as a stack of patches - like quilt, but on top of git.
git-branchless also fits in the same vein as stacked-git with everyone’s favorite commands like `record`, `unrecord`, & `smartlog`.
That said, I’ve been using darcs this past month & the performance issue seem overblown (/ largely fixed, tho not fully addressed) while the stability & usability are there. Email support is a bonus.
Meanwhile, if rebasing on git is an issue, you should probably try stacked-git (https://stacked-git.github.io/). It manages commits as a stack of patches - like quilt, but on top of git.