I'm interested in purchasing a new knife (my old one is practicly faded away), and I came across this one I really like the design and colour. My main question is: is this one of those knives that pop out if you press a little button (pardon me for not knowing the correct english word) or do you have to pull it out with your finger? I can't find it on the site. Second: Is this a good buy? I know squat about knives. Mind you, here in Europe, laws on weapons are much stricter (to say the least ) then in the US. In order to carry it on you, the blade has to be less then the palm of your hand (4 inches).. Ideas?