User blog comment:AndDie/Can an alchemist perform two types of alchemy?/@comment-1467547-20130501072828/@comment-2124439-20130508002706

You seriously haven't even seen Brotherhood? I really thought you had.

But yeah, the wall thing is a very basic move that most alchemists know; undoubtably covered in "the basics" when they were learned it to begin with, regardless of whatever 'type' they happen to specialize in.