Quote -
It seems to me if I plan to buy other aritist's work regularly Poser would be infinitly easier. Is this a safe assumption?

 

No.

You didn't describe:

1. What you bought.

2. What figure you bought the clothing for.

Until you do, I don't think anyone can really help you.

For example if you bought the Victoria 4 character and tried to apply morphs from Victoria 6 or clothing from genesis, the clothing is not going to work as each figure is set up and rigged differently. Basically you are dealing with over 8 years worth of tech between 3 DAZ figures; some things will work and some won't. 

You will enccounter the same problems if you buy something for the wrong figure and attempt to load it in Poser. 

There are a lot of figures available for you to use; you have to do your research into what you want to do to decide what to purchase and use.