RIO Atlantic Salmon/Steelhead line

It appears the line has a new profile; the back end of the body is larger ( click on "line profile"). In the attached profile at 30' back from the tip there is 24' of increased diameter. Appears this would help roll casting and mending.
Has anyone used this new line? I really like my older one that I replaced with an Orvis taper (which doesn't get it for me).