Mas I have been focusing upon carrying knives for backup to my pistol, recently. I still carry my Glock 23 or 27 with a second magazine for potential malfunctions. However, I have been carrying different knives (concealed) as a backup for defense, as well as for various utility purposes. I have and have carried the following knives a few times over the past few months (not all at once): Cold Steel Master Tanto (6" fixed blade) Benchmade Infidel Model 3300 (Out the front automatic) SOG Trident Tanto (Folder) SOG Pentagon Elite (Folder) Benchmade Model 42 Balisong Cold Steel Magnum IX Tanto (9" fixed blade) What is your advice on the use/carry of knives for self defense? Would jurors consider my 9" blade excessive? Do you carry a knife for self defense?