The saint Andrew’s way or The Way of St. Andrews?

Hi, I’m a Norwegian teacher who for the last year have walked a few of Europe’s old pilgrim trails. I am currently planning to walk from Edinburgh to St. Andrews in the fall. There seems to be to competing trails, both claiming some sort of heritage status: You have the trail following the Fife coastline, that is The Way of St. Andrews, connected to this forum. Then there is The Saint Andrew’s Way, an inland trail passing through Dunfermline, Scotlandwell, Falkland and Ceres. From what I’ve learned of these and other medieval trails, the inland route seem to be most historically genuine, while the coastal route may be a more tourist friendly option. That’s my impression anyway. I would like to hear from some of you with more experience from these parts of Scotland. Maybe someone have walked both?