Traveller is pretty much right about anything goes in Florida. You can carry a folding knife as long as it is 4 inches or less. I have a concealed weapons permit so I can carry auto knives as well. In all honesty, I prefer manual opening knives since the auto knives tend to want to flip out of my hand. I can open a manual knife as fast as any auto with just the flick of my wrist (liner lock or Axis lock). I don't like the safeties for auto knives since the lock may engage accidentally and you need to open the knife quickly. I think the worst are the assisted opening knives. I just bought the Benchmade Subrosa which has the Nitrous assist. As soon as you open the knife a little, the blade snaps open. This is especially awkward since you use your thumb to push the blade open rather than gripping the knife. The Kershaw design is much better since you used your finger to "flip" the blade open.
Here are some pictures of my "butterfly collection" and some of my other knives.
From left to right:
1. 910 Striker Tanto by Elishewitz 154 CM with BT2 Coating
2. 710 by McHenry and Williams 154CM (My everyday carry)
3. 710 by McHenry and Williams D2 with BT2 Coating
4. 710 by McHenry and Williams D2 with BT2 Coating
5. 770 by Osborne 154 CM (Carbon Fiber Handle)
6. 790 Subrosa by Lerch S30V (Nitrous Assist)
7. 9053SBT 154 CM with BT2 Coating (Auto Lock)
8. 921 Switchback by Osborne S30V
9. 970 CQC7 by Emerson ATS-34 (My First Benchmade)
10. 875 Sentinel by Elishewitz ATS-34
11. 950 Rift by Osborne 154CM (Carbon Fiber Handle)
1. Stone River Ceramic with Titanium Handle
2. CRKT M16-13Z from Laser Max
3. Kershaw 1760 Skyline Damascus
4. Gerber EZ Out (My First Knife)
5. Boker AK-74 (Automatic)
6. Gerber Airframe by William Harsey (#1 of 1000)
While I have quite a few knives, I mainly carry my Benchmade 710. It is by far one of the best designs out there. I actually use my knife quite often for breaking down bozes and opening packages. I doubt I will ever carry some of my nicer benchmades. I guess that makes me a collector!