Just came on to this thread a bit late, but here is my tuppence worth.
Regarding the original post, yes poles are worth while. I never used them for my first 30 odd years of hillwalking, but when my nephew went to the Far East on an Expat basis, he left his hillwalking gear with me. I eventually tried the Kohla poles he left behind. Great for river crossings and descents, but I was over my macho belief that poles are for wimps, they have their place in a hill walkers gear options. I moved on to lightweight Leki Makalu's when the tarps came along, but the forward inclined handles of the Kohla's were much more comfortable than the straight handles on the Leki's. I have since moved on to Pacer Poles and they are much, much better than either the Kohla's or Leki's. Firstly in terms of wrist/arm comfort and secondly in maintaining an upright posture whilst walking.
As far as the latest postings are concerned, crampons/axe/poles, I suppose it is mostly down to your individual level of confidence and competence. The combination of crampons&axe or crampons&poles can only really be determined by the individual and what they know they are capable of, or comfortable doing.
I have at times very confidently descended hard packed snow down Am Binnien heading to Ben More using crampons and poles whereas at other times in deep fresh snow, the crampons stayed in the sack, the poles were stashed away and the ice axe came out. Same hills, but different conditions, requiring different options.
There are so many variables, but the main ones are always the experience and the competence of the individual.