I'm not sure about anything concerning the 'Standard', but I've noticed with mine that as the coats grow, when they get about 3/4 to 1 inch, they will curl. Left to grow, at about 3-4 inches, the weight of the hair begins to straighten it out a bit. I use a comb and a blow dryer after the bath, and the heat from the drying process straightens it out even more. Also, using extra conditioner and letting it set into the coat for a minute or two before rinsing helps some. (Is this cheating when it comes to the Showring?)
Shaved down
2-3 inches long
10 inches (waves at the bottom from leg/rug)