Well it's obvious I haven't learned anything.
Why a pocket knife, let alone a swiss-army type?
These usually have short, narrow blades, cumbersome handles, and generally they are not designed for stabbing or combat: no quick-extension mechanism, no safety pin, no locking mechanism, so if you have them pocketed, you'd be beat into a pulp before you could even extend the blade. Even if you go around with the blade fully extended, it's not designed to lock like a switchblade's, so it would tend to bend inwards and close with the slightest pressure.
If you really want a "street combat" knife, there are way better types which are designed for hunting and survival, have much better grips and are still foldable and concealable.
Besides, I wouldn't feel at all threatened by a guy wielding a swiss-army knife with a bunch of sporks and corkscrews protruding from the handle :-p
People, I present you with my knife collection. I know it ain't much, but I still can't wait to use'em hardcore on some burglar (I keep my door unlocked at all times, just some mothafucka to come bargin'on me...)
Well TF2 has a butterfly knife... Hmm, not sure about games and swiss army knives, but hey, you know, instead of games, I think this would be more fun irl. I think Swiss knives are pretty cheap. Then just hit the downtown area at night and take on those beggars in the alleys.
Actually, I got all sorts of PK's, daggers, lockblades, even an automatic opening one. Hell, I even got a a machete! But I still prefer my good ol' partner:
Why? Cause it's compact, well-finished, good-lookin', and I know that the mechanism won't fail on it over the next 10 yrs, unlike the switchblade I took for 2$ (I actually paid that much) from the black market. Plus, it's easy to hide, at only 93mm (folded).