Agree with
@Peachy Clean Soap and
@ResolvableOwl. Hanger swirls are one of the few things I knew about before finding SMF, and they can be done from any side or angle with nice results as long as there's some pre-thought to the swirl and cut.
This is one way to cut when doing a hanger swirl along the short end of a loaf, and I'm pretty sure it's the same cut done for the "wood grain" design RO mentioned:
View attachment 57150
Cutting in a normal fashion you don't end up with anything too impressive but you can get a two-sided soap look if you're methodical with the spacing of your hanger swirl. That is, make your swirls very purposefully 1 inch apart (or whatever is the normal thickness of your bars), then cut between the swirls.
Doing a hanger swirl diagonally through a loaf and then cutting normally can yield bars that look as though they've been cut in half and then welded back together. Sort of cute if you ask me.
....I like hanger swirls....