If you are interested in Silo, you might want to pick up a copy of this book:

http://www.amazon.com/3D-Modeling-Silo-Official-Guide/dp/0240814819

Obviously not a video tutorial but it does go thru most of the basics of the program right up to creating a full female figure, hair and clothing, which are many of the techniques needed to make poser models (without the rigging, obviously).

I'm sure there are also videos out there that cover these techniques too, but I found that with knowledge of ANY basic modelling it was easy enough to pick up modeling in Silo.

I still don;t understand your hang up with shaders or textures in your modelling program transporting into poser, directly. Posers shaders are unique enough that there are NO programs out there that can be 100 % compatable, well possibly Blacksmith3d or another program written specifically to interface with poser, I don;t know for sure, but certainly none of the "major" applications. Any independant 3d paint program, or subroutine in a 3d suite, will need to be imported into poser and then, at least, "tweaked" to look good.

Personally I think of modeling and rigging and texture/shading as 3 totally seperate operations and have programs to perform each seperatre step, finally blending all of the elements together in Poser.