I bought the Zeta SL as used, but still in good condition. I wanted to see how waterproof it is, so i rinsed it with a showerhead for couple seconds. Is this normal for the Zeta SL?

I ended up getting a 70% discount on Arcteryx and I need some recommendations.

Was thinking about getting 1 or 2 jackets + anything that you think is useful or very worth it for the discounted price.

I was looking for a good jacket for snowboarding in Japan, I want to go more often but never had proper equipment so I don't know what to look for.