Unfortunately, I won't be able to get a CCL until about 5 months from now
As far as I understand Milwaukee has a city ordinance that says knives must be under 3 inches. This is the only one I am aware of though, are there others?
http://www.bladeforums.com/forums/showthread.php/874396-Wisconsin-Knife-Laws
http://knife-expert.com/wi.txt
http://www.defensivecarry.com/forum/defensive-knives-other-weapons/147046-knife-laws-wisconsin.html
There are other cities, but I don't think anyone has taken the time to research them all since knives are not covered under state preemption, so you'll have to research every single city you go to.