I'd say that anyone who has shelled out their hard-earned cash for poser is entitled to use it in any way they like.  There isn't a "right" or "wrong" way of workflow for it, just as an artist painting with watercolours might decide to sketch first, or just paint on a blank page.

Whether the medium used is on the computer or more traditional everyone has their own way of working which is personal to them and what works for one may not work for another. 

i7 5960X, 32GB RAM, GTX 1080Ti, GTX 980 Ti, Windows 10 Professional.  Running Daz Studio 4.11, Poser 11, Vue Inf 7, Photoshop CS4