Yes I came up with this idea, even metioned to Alex in a phone call a long time ago, don't put too much on, because the higher you go the more the bottom pole is compressed, and it can become stuck.
I found a light film spread evenly over the end of the pole, and repeated every month is good enough.
If the poles do stick, don't try pulling apart, it will never budge, but twist both poles in opposite dirrections and the poles come easily apart.