For extra grip on a shorty lever, after cutting ball off and smoothing, put a neoprene gear shifter sock/grip (available at any mountain bike store) on it. they are sold in pairs and various colors to help riders keep a secure finger on the gear levrs in rain and muddy snot.
A bit of hair spray, get the sucker on, wait and day and away you go. Have one mine, cost next to nothing and allows a easy and secure 2 finger grip on a short lever.
"...who gives a rat fornication?"