I've had it for a year or so.  After an initial flurry of use, I haven't used it lately; though it is on my list to re-explore while I await P7. 

I made a pretty convincing (to me) animation involving one character punching another through a cinderblock wall, using poser physics both to make the wall blocks tumble and roll around on the floor and to make the punched figure go ragdoll.  But it took hours to get it set up and to tweak the various settings so it worked well.  I made another following scene where figure 1 flung figure 2 against a wall and figure 2 then ragdolled to the floor.  That one worked well pretty quickly, so I guess ease of use is highly correlated with scene simplicity. 

Bottom line for me:  I definitely like the program, though it can be tricky to use.