Hiya Corvus, Yer, if using them walking stick style, anything will do.
It is interesting (perhaps) to think back 20 odd years and remember that hardly anyone (besides those 'offbeat' europeans

) using dedicated commercial style poles... Then there was a steady increase till they are now quite common.
I started using one pole (support style) when my knees started to show their age (twice mine apparently). I tried two a few times but just couldnt get the hang of it. Following a few heavy trips I decided to take two and stick.... with it.
I guess it is just 'one of those things'. It is hard to explain to those who havent persisted with them. They do become like an 'extension' of your body. Pretty much out of mind. That they do use your upper body is undeniable (You feel it, especially after the first few weeks). This part is not suprising really, afterall, that is 'Nordic' style and is how they use them...
For a while I also had a problem tripping and getting them stuck in things, that also sorts itself out. I'm stil using the pair i started with (Jacko Prostar, not expensive $80-90 from memory) and no problemo (perhaps 800-1000k's whoknows).
I guess its one of those things also that (being forced into) I wouldnt wish on anyone (my knees can ache for days even with using poles) and it is a condition that isnt noticed until its too late (knees 'creaking' is a sign but not always and it quickly progressed from there).
I guess your lucky, my knees are obviously older than yours
Anyhow, just pointing out these ^ facts... see ya tomorrow (am?)