Big Daddy Lipscomb was, as most know, a fine defensive tackle. But what most don't know is that there were times during his years with the Colts he would stem to linebacker making the Colts from a 3-4.
It was not often, but then again it was not something that was so scarce that it was not "a thing".
Here he is moving from the line to linebacker versus the 49ers—
And while we're are on Big Daddy, here his a clip of him running back an interception, showing some good speed—