Hello, I'm having a vacation in another part of the country, so I haven't been able to answer your posts. But I can answer some now brief, since I'm on a 56K-line only.
I can, but I will not release any textures as VMT and VMF, TGA is the best since its uncompressed and 'free' from any game bounds. Also some engines supports them directly, like Q3E, D3E and others, and I really think that people who have obtained a skill in using displacements for creating alpha modded terrain should know how to create a texture to use within Source, atleast for me, was that one of the first thing I found out.
If anyone like to, they can convert them and redist them as Source-only textures, I don't mind, I just won't do that.
About the normal maps, I just did them cause I do that for all my textures made of stone and with other 'uneven' surfaces. I know that I probably could have done these a bit better, but I really did have no time.
I usually don't release textures before I have used them myself in a released map, but since my next map will take some time and it sure will not contain all of these styles I'll better just release all of 'em now. I plan to release some brick textures also...
Use these textures however you like in whatever game you like. I would love to see some of the work.
Cheers friends