Ok, so here's another attempt at trying to experiment with hand painted textures in maya. I adjusted all of the bump maps, making the darker parts lighter and more grey-scaled in comparison, so there is more of an overall texture, taking away some of the flatness of the dark sections, giving a fuller sense of texture. By adding a dust and speckle filter, and blurring out some of the more 'grainy' textures, I was able to cancel out some of 'braile' effect.
Although the sphere shape has warped the texture, it still shows the bump mapping around the surface to some degree, though I think it may be more effective on a flat surface, a plane for instance.. I think proper lighting would futher bring out a better effect of these.
*Note* Blogger appears to take out some of the finer details of the bump mapping :(