How much do you trust cross-brand weather sealing? (OM-1+PL12-60)

Hey everyone, happy holidays, first and foremost. I was wondering the title question, considering I just got an OM-1, which I love, a huge jump from my trusty GX80 which I used with Pana Leica 12-60 f2.8-4. Considering the PL is my main lens on the OM-1 as well and since I am just about to leave for polar circle Sweden, I was wondering how would you approach the weather sealing. Both the body and the lens are nominally weather sealed, but considering some cross-body (in)compatibility (of which there is precious little info to be found on the internet), I am looking for input. Don't want to ruin any of these by being too confident and rolling in the snow needlessly.