That is ok, you could always put a "T" and ball valve there and a few feet of pressure hose if you wanted to run a gun/wand from the surface cleaner.
What I do is keep the wand resting on the surface cleaner and when I need to use the wand, just block the ball valve, (on the end of the pressure hose) disconnect from the surface cleaner then connect to the gun/wand and do what I need, that way I have a lot more hose to do the cleaning instead of a few feet that is connected to the surface cleaner.
I do like the idea of having a pipe holder for the gun/wand on the surface cleaner, works better than what I do now. Time to modify my surface cleaner with a gun holder.