I also don't like the fact that you can't use the KUIU load sling and the KUIU pack at the same time with the KUIU frame, for the same reasons you mentioned. All the connection points of the load sling require you to use the pack connection points. If you use a KIFARU frame, you can use the KUIU pack and the KUIU load sling at the same time because there are extra connection points on the frame not used for the pack, or you can use the KIFARU Cargo Panel (even better) and the KUIU pack at the same time, You can also do the same thing with the K4 frame and KUIU packs and load slings, but there are more strap connection points on the KIFARU frame. BTW it is possible to add straps to the KUIU frame and use the KUIU Load Sling and KUIU pack at the same time (sort of), KUIU just doesn't design it to be used that way. I still prefer using KUIU packs on KIFARU or K4 frames.