It would be really nice to have. I don't know about how everyone else designs their outfits, but I usually start with an item I want to wear first (sometimes a background, sometimes an item of clothing, especially if a friend gifted me something, I like to then build an avatar around that). And then when I go to put on skins, I have to save it, go back to the avatar page, It isn't a lot of extra time, but it would be MUCH easier to have the preview on the skins page so I can just toggle through to see what skin works with the outfit the best.