Restricted just means you need to have a fake license to show if you're stopped by the Star. And if you're wearing a lined coat or similar, then a katana is easy enough to conceal. But usually when I go for a character focused on bladecraft, I end up with 4-8 bladed weapons on my person at any one time, as well as a pistol or two. Sure, I only have the two hands, but sometimes I get excitable as to choice. And yeah, a combat knife is one of the options I bring, but it isn't the be all end all of blades. Sometimes you want more reach. Sometimes you need more AP. Or the higher base damage of other blades. Sure, a combat knife is a good desperation weapon, but in all the times I've played a melee-focused character, I've never had to draw my knife. Rule #1 of winning a knife fight: Don't get into a knife fight.