Hello Zembel - sorry to answer so late!
lol - don't speak about my accent - its horrible ^^
to point 1 -
Its one of the advantage of the meshstudio to reduce the LI, but also that you can "build" things in a different way, like with sculpts before - but you can define 8 faces for different materials.
to point2 -
The texturing is very easy with that tool, cause it generates automatically a uv map from the texture on the prims. The uvmap reflects the texturesetting from the prims. Thats means - you define the uvmap before you upload the mesh. And you can use the normal textureset from inworld.
You dont need to change the uvmap in a 3d program, but of course you can render it out in a 3d program.
@Bouttime Whybrow
Yes, it does from what i know.
If you have more special questions, please ask in the group "Sweet Meshes" or the Creator of the Meshstudio, TheBlack Box - he can answer that in english much more better than me!
Have a nice day!
Marlen