I use carbontex on all my spinning saltiga's and i either use cal's grease or shimano drag grease on them.
I never tried them dry but I have read on other forums that they had problems when running them dry. Apparently the carbontex can get a bit too abrasive and damage the spool and drag plates when they are run dry on the saltiga spinning reels. I did try to use them dry on the Saltiga Z30 without any problems but the drag plates are all stainless steel in the Z30.