I try to make the service look good. It's one time where our work gets a chance to show its self off. With service upgrades, I allways paint the 3/4" 2x4 plywood with 1 coat of weatherproof primer and 2 coats of weatherproof battleship gray paint. It looks good with the panel on it, and the wires neatly put into the panel. With the water main clamps, I use the scotchkote 3M coating over the clamp. The clamp does not rust or corrode with that stuff on it.
Those pipes build a lot of moisture on them in the summer time. Price range from 1,200.00 and up, for 100 amp. 200 amp in the area of 1,800.00 and up. All are with PVC conduit.