I have Wardrobe Wizard and the Fitting Room, and use them.

But when I buy an outfit, it's because I want it to fit a figure without my having to fiddle with it.

At this point, I have just about all the clothing I need.  Some of it might have been made for V3 or David, but I can fit it Dawn or Miki 4. 

But I'm willing to pay for the convenience of not having to do that.  Time is money!

Plus, some things don't convert very well.  Shoes, clothing with lots of fancy details, etc.