@pekkatahkola oh yes, can attest to that working well, did it myself in Oulun winter many years ago.
The big difference to other countries/cities in winter is you have snow predictably and don't use salt so the flat snow surface and structure allows bike use.
For breathing I found the biking at subzero till -20°C degrees downtown challenging, ice crystals forming and all. Oh, and the right chain oil that keeps the chain moving is important - so a few preparations are necessary.
