Honestly, this idea will never work.  Don't mean to be a debbie downer, or as long as it's just to keep your gloves from falling off the pole ends and into the snow during safety meetings, as the magnet will NEVER be strong enough to hold the poles to your hand.  Besides, Leki already has the trigger grip thingies and nobody butracer douches use them anyways.  
Also, any kind of switch and elecrtomagnetic dealio will take up a ton of space, be really heavy and also run out of charge in the cold.  Also just gimmicky, so unless it could be had for the same price as regular poles, it won't go too far.    
I'd look into inside-the-grip storage though with a screw-off cap.  For real, I'd buy that!  Couple L's in one, lighter in the other?  BAM.  Instant hit.