This particular article addresses each of the covenants, gilds, and magi who might be involved — positively or negatively — in a Saga which explores north and investigates the “Order of Odin.” It’s a way to turn a very inward-facing Autumn Tribunal into an outward-facing Summer one. I think you’ll find a lot of ideas here for a group of traveling Journeymen who have a chance to interact with all the factions and characters of the Rhine.
Christian Andersen, who wrote this piece, is active on these forums and might be able to tell you more.
The article expands upon the quite short notes in Guardians of the Forest about a "Wind, Wave, and Ice" saga involving Scandinavia and the (possible) Order of Odin. While it may be common for freshly gauntleted Journeymen to spend time as Peregrins, spending some years here and there it is by no means a must. None of my own Rhine sagas have been with Peregrin player-magi. It should work just as well playing as Peregrins as it should in a set covenant. The covenants furthest to the south and east would be hard pressed to interact directly with the saga arc, however in the Rhine the Gilds bind magi together.
Well, let me know if you love it ! A few days after I wrote that adventure, I added Robin Hood as Robin of Loxley, a grizzled Nordman lord in the king's army. Still doing some rumpus with his old fellows, and still a good archer in spite of old age. My players loved the cameo.