I'm not going to confuse a newcomer so please disregard what i have to say.For the first time i can remember i'm pretty sure you are wrong about this alex.IMO The best place for a tap is on the end of a hose.
The best place for a reel is fixed to a van, and the proper disipline must/should be used for walking your hose end and still attached pole back to the van.Once the tap and the pole is inside the van the hose is wound in.If the reel is to be wound in fast (electrically) this results in fewer tangles and no damage.
The pole and hose tap should stay with you at all times.The best way to do this is to have a harness that fits over your head and under one arm.IE, arrive at job ,exit van, open side door, put harness on, grab pole ,walk to furthest point,- squirt.
I can only speak about domestic of course.The easiest way to make a harness is to put thin nylon rope inside some garden hose and obtain the lenght according to your girth.
Bit of a know-all post this, but by far the best method for domestic.