I've spent the summer riding with this on my gravel/all-road bike and I am quite impressed. It simply works. It keeps your chain quiet and well-oiled. This version especially is pretty nifty for how truly "lite" it is. Just a few drops so it's not going to make a mess or get super gritty (though it does get dirty eventually, it's not magic.) It really doesn't even take a lot so a bottle can go a pretty long way even if you use it a lot.
But you don't even have to use it that often. Dumonde claims it works better the more you use it because it bonds to itself that's already deep in your rollers and I've found that to be backed up. My second application lasted a lot longer than my first. For a "pro" formula that presumably sacrifices longevity for "raceday" performance this sticks around for a while. And it's not that much more than the regular formula.