On a heavy S90 with original T8, definitely in the "keep up with traffic" category, even more so when hills are involved (and in SW PA, Hills are ALWAYS involved)
And I run in PURE almost all the time, with HVAC supposedly reduced, but it was mild yesterday anyway. I would say that unless I'm in eAWD or whatever (rarely) if I'm not in PURE, I'm in POWER.
My wife, just turns it on and drives and ignores it all, which still works very well, and she loves it too.
Also I think that PURE lets you draw deeper into EV, seems that no matter what percentage I'm at, when I pick it, it adds 2 miles to the range. And if "empty" it still will add 1.