Have a look at the Westsail Brian Duff and I did last year. He designed a sprit that used the lashing systems you are referring to. We spliced dux directly to the sprit and served over the splices for a traditional look and better abrasion resistance. A few years ago, I helped restore Sally, a 10 meter out of San Diego. It used separate 7x19 straps wrapped in leather to hold the rigging up. Chalks were placed (staggered) on the spar to hold the straps. The sail track was off set from the back of the mast so an opening could be provided for the straps to clear under the track.
