The reason for the name "caddie bag" is that many big name courses with caddies now do double loops, carrying two bags and working two players in the same foursome. I am not a big fan as you do not get the same personal attention you would get from a single caddie. It's really bad when you hit your shots in different directions off the tee. These caddies love the single strap as it makes the double loop much easier for them. As for the LinksLegion bag, I think as nice as they are, I would get the version that had dual straps instead of some alteration that did not look original.

LinksLegend Caddy and Carry bag straps are completely different from the Members and Classic Members bags and do not interchange. LinksLegend bags are now available thru Titleist online ordering. They are very lightweight and in my opinion no need for the double strap. Just an opinion. Titleist and LinksLegend straps are not interchangeable to my knowledge.