What does personal commercial mean? No commercial use of the asset is allowed under no circumstance. You will get sued by valve company since it's their property. They only give license to use their asset in non-commercial free projects.
Viewing post in FREE Juggernaut 2D Game Character Sprites comments
Even if you put the Juggernaut for free and you gain profit from your game via advertisements or selling it, it is then counted as a commercial game and therefore violates copyrights of Valve. Simply you are not allowed to make money when you use the juggernaut. I was contacted by Valve because some X developer used the juggernaut in a commercial game. So please be careful.