hmmm hard to say since in most cases the breeches are pretty much hidden away under waistcoat, coat and stockings pulled up over the knees... over all what can be seen, seems to say no but then again...
would love to see the original this is taken from
( a bit earlier)
on the upper class, you certainly seem to have a case for more decorative buttonhole treatment around the pockets... but its hard to say whether or not it was common....
hard to tell from this one as well, note his breeches open at the knee