I can only speak for my country (Italy), and give u also a general overlook.
First thing that u need to know, it's that, unless u do stupid things, the chances that ur luggage or ur person will be checked is really low. I was never checked nor told anything when I carried knives. Still, u have to know and observe the law...
Italian law is a bit tricky and quite stupid about knives. They're considered kind of improvised weapons, and there are actually no strict rules on what u can carry or not (apart from daggers and switchblades that are illegal, since they're considered proper weapons).
The point here is, law says u need a reason for carrying a knife. Otherwise, virtually any knife is "too much" and therefore possibly illegal.
If u will be camping/hiking and so on, that should be enough of a reason for carrying blades, especially those u mentioned (a cold steel espada xl would be probably seen as "too much" if they check u).
For what concerns checked in luggage, here u should have no problems. Anyway, keep in mind that:
- the chances of being checked are low but
- any police officer could be against ur "justification" for carrying a blade.
Hope this helps.
