Wait here just a second...
You're in Chicago...
With a knife...
Willing to defend yourself with it?
You do realize that there are laws that apply to blade length in the city, right? You do realize that there are many people that legally roam Chicago with a firearm (including myself)? What advantage does a knife give you? Why not just apply for a CCL and carry a gun?
While you're waving your Bowie knife around at an attacker, I done shot that SOB (legally) and won't have to jump through legal hoops trying to defend my position on why I had a knife that's considered illegal in Chicago.
To clarify, Bowie knife is a side-sport similar to fencing we bring out because it has interesting history dating back to New Orleans dueling academies. It's fun, not applicable, if anyone truly carried one I'd have the same response. My story was reflecting on how people were gleefully taking pictures of the Bowie sparring and asking to hold the trainers, while if we were drawing blades and grappling the cops get called.
Chicago has a 2.5 inch limit which we all adhere to with our real tools, to the point we grind down popular blades to fit that limit. Bowie and Filipino stick and knife is pure sport to me, I fenced foil in college and now compete all over in full-contact longsword. Not all blade training is paranoid, take it from a guy who giddily waits all year for the party where we cut melons with swords. I will never have a 31 inch rattan stick, nor a twelve inch Bowie, nor a Filipino Gunting, or tomahawk on me in a real world scenario. But man, are they fun!
And clarifying further, almost everyone I train for defense with has a valid CCL and carries, myself included. When people come asking for defensive training, we start with 'Get a gun', then we work towards for when that gun isn't applicable such as in clinch situations, gun-free zones, etc. We primarily are fighting in an area the size of a phone booth, that's where drawing a firearm becomes tricky. By all means, any logical person should go for their legally carried and dutifully trained firearm before a blade. But that still doesn't stop me from playing around in older martial arts with blades or implementing edged weapons into my tool box along with firearms, impact weapons, hand to hand, and pure common sense. Pure knife types quickly get told these realities and either lighten up or retreat to wherever they got those ideas from. I also compete in IDPA, USPSA, and work as a safety officer at Glock matches....I consider that limited accuracy and pressure testing and augment it with realistic seminars, hoping to train with Southnarc up here in a couple months. He's doing ECQC Off the X facilities in Niles in September, if you're interested.