I'm running the OME 2.5" lift and have the stock bags ( 60728 ) ordered and agree with your logic - it makes sense. But, I've seen 3 owners that use different bags
Yep, when I was researching, I saw a lot of guys using longer bags. There also were a lot who were reporting failures, but I do not recall if there was a direct correlation between the length of bag or not. I think I am going on 3 years with the AirLift bags and have not felt any impacts on articulation, or have any issues..