When i went to sveits a lot a few years ago this was always a huge hassle at check it. They hate ski boots and if you check them in they say with evil smile "sorry sir you are over the weight limit and must pay an extra $1000 under the warsaw-pact-agreement-international-congo-protocol-rip-them-off-section-of-the-1945-bullshit-nuremburg-peace-treaty" . So from my experience save your self $999 by doing this:
1. always hide the boots when you check in(watch out they lean over to see what you are hiding)
2. In the shopping area in international departures after going through security buy some AA batteries (only 20kr, you always need them) and you get a small bag with "tax-free" on front side
2. Outside store in seating area, stuff the small bag full of stuff from your handbaggage til it is full then go back to store and say "very sorry but the last person gave me this bag, but it was not big enough, can you give me a larger one" They then give you a medium bag
3. Do same thing again, stuff this medium bag and go back with same "very sorry...etc" and get a big bag
4. Put your boots into this big bag and when you go on board the staff see "tax free" on side and think you just bought the boots. You then have no problem because the airlines dont complain about people bringing on heavy tax free goods which they have just bought because (ha ha) they all make money from tax free! So instead of getting shouted at: "sorry sir this is too heavy you must pay extra $1000 now or get off!" you get instead a smiling face and: "welcome on board sir, can i help you with that bag? we have a special storage place at for heavy shopping items at the back."