User blog comment:Kirkburn/Technical Update: August 12, 2014/@comment-3388044-20140813102613/@comment-452-20140813203908

With my examples, none of the users welcomed by User:Wikia and appearing as User:Wikia have had their user pages automatically created, so I have no examples of that, sorry.

edit: After looking in to this some more, it turns out that you only need look at Special:NewPages in order to see examples of this, on wikis with userpage creation enabled at least.