Most electronic knife sharpeners are dual-sided. They sharpen both sides of the blade, which is a big no for single bevel knives. Some electronic sharpeners can sharpen only one side, though. These kinds of electronic sharpeners are adequate for single bevel kitchen knives. Nonetheless, sharpening stones are more versatile and sharpen all knives of different sizes and shapes. You might find yourself limited with an electronic sharpener, especially when sharpening larger single bevel knives.