This is where the Unger Nlite scores. It has very robust external pole guides. The pole hose can be clipped under it from outside rather than threading through. Also the bottom end stop has a side feed so the pole does not rest on the hose when on the ground. Getting some grit inside the pole is almost inavoidable unless you have the time to clean the hose constantly. This will shorten the life of any carbon pole.
Steve Hiclean UK
I prefer it outside (as I said a few months ago in this thread).
I like it so I can quick disconnect if needed and can move around a bit easier.
What I do is when I get it extended to the floor I am working at, I just twist my WFP three times and the hose is wrapped around the pole so it doesnāt get stuck on tree limbs and whatnot. Simple to undo, just spin three times backwards to undo it. We have a lot of clay around here and pulling clay into the pole got too messy to clean up so this is the best route for now.
Is it more solo operators or people with only one pole prefer the hose on outside the pole because they drop sections as they lower in height and is easier.
Those with many poles, for different heights seem to like the hose in pole as they donāt drop as rooms often?
Weāre outside hose people. Dropping or adding sections every few minutes. It keeps the pole cleaner, thus not wearing out when hose gets dirty.
Most of the time we wrap the hose around the pole a few times to avoid ābuilding spankā and to maneuver around obstacles.
Gardiner sell a pole hose cleaning insert. However you need to change the insert often.
The warnings of premature wear for the Extreme pole are severe if you donāt keep it clean.
To me itās like the internal vs external cable routing debate on mountain bikes. Internal routing looks tidy but try a quick change of brake or gear cable. I spent a long time on a Colnago carbon bike frame trying to fish through a new gear cable. Not trying to make money at the same time though.
How to do it on a bike 
there it is, the real reason to have the hose on the outside for this situation, perfect, thanks
whats the difference really? If the hose isnāt wrapped around your feet itās wrapped around branches, hose guides, landscape lighting, hinges, curbing, stone walls, vehicle tires, plants, down spoutsā¦ and letās not forget about reeling up the hose after itās been ran through dog shit !
I use a damp cloth to wipe the hose as I wrap up. NO EXTRA TIME 
Thatās my #1 pet peeve.
PS
Oops wrong thread
But your missing the part where as you are working and dragging that hose thru dirt and whatever and extending your pole that that dirt is being carried up inside your pole and being deposited on the inside of the pole creating a sandpaper type effect when you extend and lower the pole, wiping the hose after the job wont stop the dirt already trapped in the pole.
The extra time that is needed to be spent to keep that pole at a clean standard would increase, else the life of the pole would suffer.
How often are people cleaning the inside of their poles?
We run the hose in side and we have never cleaned them
Actually I start at the top and work down. No raising and lowering Pole. Most homes are two stories and I prefer to work my way around house not up and down. I frequently clean the .first floor by hand.
PS
I use a back pack on homes. Faster than dragging hoses in my opinion.
Every week. Maintenance is important, IMO, if you want your equipment to last. Every scratch is a weak point in the CF.
Whenever I feel excessive grit, which is only on jobs where tubing runs through dirt landscaping all day. Most jobs it runs over concrete or grass, not a problem.
I run my tubing on the inside. Canāt imagine dealing with a dangling tube or wrapped around the poleā¦
I run inside too.
When this came up I tried outside for a few jobs, didnāt like the dangling hose, caught on stuff and still gets dirty and must wipe section before closing anyway.
In England we have ground floors. First floor is where the bedrooms are 
Any way. As you say. Rest those shoulders now and again and do some two handed mop and squeegee work on the ground level. Reduces repetitive strain.
