Thanks for the tutorial, I don't own B2M so I cant use it and with Substance Designer, its limited in texture size and I am waiting since a long time for them to change that. I will have now a look at the tutorial, lets see...
Weird. I remember someone posting a whole tutorial about how they did it. I'll look around for it. Bitmap2Material also comes to mind, have you looked into it?
http://polycount.com/discussion/157151/tutorial-tileable-textures-from-photoscan-bakes Not the best transitions, but you can improve them by using a little dodge/burn on the albedo.