HSTO is a multiple wrap with a mechanical connector.
I have a buddy who does it with a hank of true blue and an old safety snap.
I thing the snap abrades the rope a bit too much though.
I like it for light rigging where we have to move the block around a lot. So I've been thingking of making my own.
Yes, I would use a locking brummel on each end, and might not match the buries depending on length. Just use a good taper.