Roger that. The guys made some good points above you may want to consider when making your decision. To answer your question now that I understand the method. The leather slings work well like that as well as how they are used in competitions.
I have both types of slings on my rifles, I personally prefer the 1907 sling, what we are calling a leather sling here. Turner slings, Les Tam slings, JHW slings and rob brown slings are the most popular 1907 type slings on the market. Les Tam slings are my personal favorite. However, he work out of his house in Hawaii himself and he has quite a large back order right now. He will personize the sling for you with your initials, if you were in a branch of the armed forces he will put a logo with the name like army or marines on the sling stamped in, and you have the choice of parkerized steel or brass frogs. He will also ask if you want your keepers sewn or riveted, most everybody I know goes with the hand sewn keepers. Another option is what is called a three strap keeper. It's a little large and obviously enables you to put three sections of the sling through the keeper. He uses very good leather, I have the name downstairs in the workshop if you desire to know.
Turner has outstanding slings as well, you may want to consider a biothane no stretch material which they offer. Many people use and love the turned slings. JHW, John Wheller I believe makes a nice sling as well, the only drawback I had when I ordered one from him was he was out of stock on leather and hasn't planned on making an order until later that winter. I would imagine coin was tight and he places his orders to coincide with the beginning of rifle competition season. Definitely worth the call though, he makes a nice sling as well. Rob or Ron Brown, was trained by Les Tam. From what Les told me, he went out to Hawaii to get trained and is now open for business. I believe he has been at it for several years now. He is often mentioned when people ask for opinions on whoes 1907 sling is quality. I would stay away from the SAI 1907 sling. I had one and the keepers started to slip. I may have put too much oil on that one. Les uses neatsfoot oil on his and lets them sun dry in the Hawaiian sunshine, he hardly puts any on. Many folks say to stay away from neatsfoot oil, I have been told it degrades the leather. I picked up a small 1 ounce or so tub of JHW's magic propriatary sling treatment. The recepie is a double secret lol. A little bit goes a long way. If you have a saddle shop in your neck of the woods, I'd imagine they would have something for sale but saddle shops around we're I live cater for the wealthy and that reflects in the prices. No cowboys around Long Island, just the rich an snooty that buy horses for their spoiled children so they can get together at the Sunday social and rave about how well Susie jumped over the visions puddle of water. That about sums it up when it comes to the good old 1907 sling. If your not in a hurry, I would give Les a call and see what his wait time is. Right now, I'd imagine it around 8 months to a year. They have been growing in popularity and of course the Obama craze. Nothing at all wrong with any of the choices that I spoke about. Hope this helps