SimTenero just brought out a set of Particle Physics engine+variants for Studio in the past week or so. I'll have to admit that most of the promos didn't convince me that it was useful for anything that I wanted to do. But I'm sure that before long we'll be seeing renders in galleries or threads that will give me reason to reconsider. Requires 4.9, however. As to LAMH hair. No, it's not actually fibermesh. I gather that it is something like Renderman curves or some other such bizarre name. It can be exported to fibermesh, though.