hey there, i've used DS since '07 and learned a load of stuff about it i use almost everything i have seen that i like on the pages of sharecg in DS since DS1.7 all the way up to DS4.0.3 (latest version) standard.
about the only thing that can not be used in DS that is in poser is the mc files and poser dynamic material. also you can't use ds dynamic in poser. pmd morphs can be used in ds up to ds3.1 with a script/plugin found in the daz freepository.i've found out that even though poser can use ext runtimes poser 7 cannot or will not recognize ext runtimes.
but learning ds was pretty much the best thing i did and all the textures i've posted and poses too were created in ds3 using scripts that assist in mat pose creation and the PFE (poser format exporter).