Hi,
Hope you have a good time over here!
Generally, SAK are ok! The law is quite straightforward: basically you can carry a non locking knife under 3". Over 3" or if it locks you need to have a good reason; work, religious reason, but you could argue if you are hiking you need a locking knife, BUT the onus is then on you to justify the carry.
You can buy knives pretty easily over here; if you're touring regular hiking routes there should be no problem picking up a SAK on route in a regular camping store.
Hope that makes sense.
I edc Buck 301 or SAK all the time and not had any trouble.
hth, John