I used to run Cal's on my Carbontex, because I liked the smooth feel, but dry lets line out just as smooth, never sticks, and requires no regular cleaning or maintenance. It also is always smooth regardless of temperature. Wet drags can get sticky in the cold, if that's a concern. Some like that silky smooth feel, and that works too. No harm in greasing, just know there's some maintenance involved. If you go with grease, only use a vapor thin layer of it. Any more, and it squeezes out and makes a mess.