I’ve only had a chance to play with it briefly, but my first impressions are promising.
Like many here, I have way too many dirt pedals and keep buying more. But with this pedal being a hybrid two-stage design with a BC558 PNP Fuzz Face–style front end feeding a Zendrive-inspired op-amp overdrive stage, it doesn't feel redundant at all to me. It behaves somewhere between a fuzz and an overdrive, though perhaps more towards the fuzz side than I expected before I got it. Great dynamics and volume knob cleanup, as you would probably expect. More complexity and less predictability than your typical Tubescreamer. Less transparent than your Timmy or Lightspeed, of course.
But keep in mind that I have not compared it directly to the Tube Driver, or to the original Dover Drive. I do belive
@DrewJD82 is working on a thorough comparison of his four (?) Dover Drives, though.