Well ... I guess that's what I get for not owning JK2.
(Well ... I played the JK2 demo but that was ages ago)
I just heard recently in some JK2 forums that most JK2 skins will work in JO so I'm under the impression that JO was very similiar to JK2, engine-wise.
To be honest with you, it's rather inefficient in terms of use of the UVMap. Personally, I would try to cram everything in less UVMaps, three the most. From what I recall, it's easier on some machines to handle 1 or 2 textures than a model with 7 or 8 textures, regardless of texture size. Although, if I add the texture coordinates of all the textures correctly, I could get two textures: a 1024x1024 (4 512x512 textures) and a 768x512 (1 512x512 + 1 512x256 + 1 256x256) if I combined them all. That would probably be easier on the system than 7 or 8 textures but you know ... I guess with more and more gamers upgrading their machines, it wouldnb't matter a whole lot but on the artistic side of things, it just seems like an overkill to use that many textures for game-related models. If it was a model for some movie cut-scene I would understand but player models, it seems well ... I don't know. Just a lot I guess.
sithlord-ii - Looking at your name, I guess you have quite an experience with the JK-games. Perhaps you can share your experiences on how you go around skinning 7 or 8 textures for one model.
Personally, I think it's an overkill. Four was bad enough during my UT1 days but 7 was just pushing it for me.