According to Art. 8 of the Weapons Act, a weapons acquisition certificate is required when a weapon is purchased. According to Art. 4 of the Weapons Act, knives whose blade can be extended with an automatic mechanism that can be operated with one hand are considered weapons. Furthermore, according to Art. 7 of the Weapons Ordinance, knives are considered weapons if they have a spring or other automatic release mechanism that can be operated with one hand, are more than 12cm long when opened and have a blade that is at least 5cm long.

Since there is no automatic trigger mechanism here, the knife can be used legally.

The knives are legal in switzerland. As long as you do not walk around with an open knife - threatening others with it or similar - nothing should happen.

No, unfortunately you may not. I was also interested in the knife and did the following research on it:

Quote: "The only downer with the Hunter Pro is that the combination "one-handed knife" and "lockable blade" is prohibited for free carry in Germany. You are allowed to own it, to carry it locked to the place of use (camping, hunting ground), but not simply to carry it in your pocket."
Source: http://survivalmesserguide.de/victorinox...

It's a pity that this doesn't apply to me - I don't want to get into trouble if I should ever carry it in my rucksack.