oh... on DiveSkin it claims that slickskin is open cell...
"Available in 3 or 5mm with slickskin (open cell) interior and in 3 or 5mm with Nylon interior"
thats taken from the website, i also emailed Spiros about a week ago asking if 5mm was available in open cell and he said yes... i guess i just assumed slickskin was his name for it? now im really confused... my bad...