I made the mistake of assuming that the only difference between slimline and climateline was the heated hose feature.
WRONG
They are different length hoses (thanks again Resmed).
Here is how my cover falls short (note photo appears blue when the cover is grey, iphone 4 camera)

I called cpap.com, after 20 mins on hold Annie told me this was a Resmed design issue and as i opened the hose cover i'm stuck with it.
Notice the hose does not even have any change to the cuffs to re-enforce them. This was not much of a surprise after being told months ago from a Resmed rep that a redesign was in the works.