Swiss Navy has a plastic seal on it when purchased and once you take it off the pump action is great. After use you depress the top and turn it to lock. However, when packed in luggage it can dislodge and then it makes a mess.
I always place it in a plastic bag and wrap it with a small towel or facecloth. I love it as my go to lube but it’s a bit messy to handle. Also it lasts and can take a lot of pounding while still providing smooth action.
I put it to use this afternoon on a 9 and a half inch love weapon by one of my regulars and it was smooth sailing.