I am not familiar with the QR bike you mention but I have the Caledonia-5 Dura Ace version and it is an incredible bike. After riding it a handful of times I immediately sold my 2020 Cervelo S5 and am contemplating selling my Aspero also (we don't have real gravel where I live so it's not really used much anyway).

After owning the bike for a week we did a 290k ride with over 4000m of climbing and I enjoyed every second of it... well may not every second but the bike was absolutely amazing. That ride included 26kms on very rough gravel road and with the wheel/tire combo I was using (Enve 4.5AR with 28mm Vittoria Corsa Control) it was fine.

Other than training for Ironman on my tri bike the Caledonia will be the bike I will ride for absolutely everything else. Probably some small tweaks with tire selection and gearing but that's about it!