Okay guys, I see your point. I've been in GL land for the last few years where all the state that's on a DX10+ sampler is actually directly on the texture. In that land, I've never needed to decouple a texture from a sampler (which I would have to effectively emulate). My artists have never come to given me a file with one texture used multiple ways. So, the ability to use 2 samplers with 1 texture, while I understand it, isn't something I've ever needed to do.
The ability to use 1 sampler with multiple textures adds something I guess but only because samplers are detached from textures on DX10+. Not because I actually need that functionality. Though I can see how if I did need it and I didn't have it I'd be screwed (would have to duplicate the texture).