I used it too with great results. Now using version 2.

Be aware, though that ImageSynth works better when used on certain types of textures. It may be very good to make tileable pebble textures, but a bit tougher to use if you need semi regular structures.

Also note that base images with strong lighting differences (incident lighting) are almost impossible to use.
 

Fantasy pictures, free 3d models, 3d tutorials and seamless textures on Virtual Lands.