So here it is:
Dust of Snow
... complete with a Russian translation that makes me very happy.
This is basically a "for want of a nail"-AU of the Hobbit (or at least the ending), told from Dwalin's POV and logically following the events of "Promises to Keep" and "To Yield with a Grace", although knowledge of those is not mandatory. Contains Dwalin/Thorin established relationship, though the various platonic relations are important as well.
My muse is feeling highly accomplished and currently backpacking in Scandinavia. *glares at acd_holmesfest fic, once again stuck in the mud although it's not even long*
Speaking of Scandinavia, I'm afraid I have to blame tweedisgood for getting me even vaguely interested in Vikings. I haven't followed it regularly - the level of violence is somewhat above my usual comfort zone - but enough to get invested in certain characters. Damn.