http://www.footballstudyhall.com/201...5-vs-the-3-3-5

This is an interesting read. I wanted to know what the difference is between the two nickel subs, and this article explains it pretty well. It got me wondering whether the Packers ever run a 3-3-5 formation, as Wist suggests, and if not, why? Is it all about coaching preference, and does that influence how the defensive roster is built? What would it take for the Packers to run the 3-3 vs. the 2-4 nickel?