I have been farming PoS over the weekend to get my tanking sword, still no drop but it has been so much faster running PuGs than running my full team. Half decent geared groups can clear PoS , last boss yesterday we had to 4 man due to one of the grp being one shotted at the very start of the fight, all it meant was that it took longer lol.
All in all though, PuGs are a great way to fill gear gaps and run dungeons to get familiar with them and work out strategies