Agree 100%.
We have the 697's on over 1/2 of our fleet (Rangers, DMax, Cruisers) and they go all over WA from Wyndham to the SA Border.
85% road 15% beach and the vehicles with the Duellers perform brilliantly IMHO... comfy and quiet on the long bitumen runs, work nicely on the sand at 14 to 22 PSI depending on compaction
I used to run Duellers or Coopers on my privately owned Patrols that did maybe 50% bitumen the rest gravel, offroad or beach, never had an issue with either brand.
Duellers were better in sand and Coopers better off road... maybe did 400K or so on each brand over the years
Now I run Nittos on the Y62 and they do an excellent job on a heavier rig than the Y60/61's