Biscuits not only makes character morphs, texture sets, hair, clothing, props and merchant resources. Just check her store and freestuff. Also, most of the characters in her promos are morphs of her own creation, Not only for V4, but for Dawn, Pauline and Star as well. I think she is perfectly capable of making her own judgement on this.

Besides that, there have been a lot of vendors who made body morphs for use in Poser such as Blackhearted, Aery Soul, Adam Twaites, Erogenesis, Meipe, Lyrra, Darkworld, DTG, Kaleya, Exnem, Circleman to name just a few.

Adapting clothes to morphed shapes is pretty easy with the morphbrush and usually takes just a few seconds with the fitting brush and it is a tool which has been present in Poser for a few years now.