If you have skate grip, cut it so there are small gaps in a direction perpendicular to the direction you flick your fingers. It makes it much grippier and less abrasive. :
Pink Grip Gap Filler Adhesive C4 Ref PINKGRIP
Getting A Grip On The Mobile Engagement Gap
Arthur Tubb - Skateboard
Loving the color combo on my new five luck! : Fingerboards
Amazon.com: Mind The Gap PopSockets PopGrip: Swappable Grip for Phones & Tablets