correct me if i am wrong but i thought the cutting motion when using a serrated knife is back and forth sawing, or long pull stroke. i was looking for on line for knife classes and got a glimpse at one i thought i would like but the video i seen showed a serrated knife being used as a chef knife when doing cutting motions. Example cutting a tomato into pieces using the tip of serrated knife down and a forward down cut,not the normal back and forth sawing used on a serrated knife. any thoughts on a serrated knife being used like i mention. if this is wrong i dont want to join the classes.