[LorenPechtel]

Depends on the terrain.

I can walk all day on reasonably level terrain with no knee issues. I prefer poles when there is appreciable climb and I absolutely must have poles and compression sleeves on my knees for any substantial descents.

I always hike with poles but if the terrain is level enough they'll be simply in one hand or possibly stowed on my pack. If I'm on a mountain I'll be using them frequently.