...there is a way to bake textures by using a one sided square, orthogonal camera, and probably a lot of fiddling. I recall both bagginsbill and PhilC mentioning a method to bake procedurals, never experimented with it though.

As already mentioned, poly painting the image onto the V4 mesh within an app with those capabilities would be a way to circumvent seams... most decent 3d suites provide some form of poly painting these days.