I tried hoses through the floor and went back to not having them on my new van.
Rollers through the floors advantage is to be able to pull up grab your hose and pull straight to the back of house and clean .
In practice this rarely happens and normally there are walls, bins, van tyres etc to negate so you end up having to go back to unsnag anyway. Even if you do manage to pull to back in one go you e probably created a tight rope across the pavement, you need to go back and lay it flat.
They also make pulling out hose harder, more resistance, especially when angles are involved.
When reeling in the hose can snag on the roller.
In my experience occasionally you will think this is great but most of the time they are a hindrance.
With regards having to uncouple the pole after every house, I never did that. I put the pole in the van and reeled in till the hose was tight round the bumper then closed the doors.