I clip a bridle path in springtime and may do touch-ups throughout the warm weather, but over the winter I allow it to mohawk-out again.
The horses are all TWHs and have long/natural manes, so it just makes a better fit for the crownpiece of the bridle/halter when there is a bridle path. One of the horses in particular has a very thick mane - oddly enough, he just has a little "sprig" of a forelock - so I've been trying to let his bridle path grow itself out, to use as kind of a forelock comb-over.