Forum:Skill Tree+Mods=?

When you max out a skill block, (ex Juggernaut 5/5) and then add a class mod that has +3 Juggernaut, do you get the equivalent of 8/5 Juggernaut?

Also, I noticed when you have a class mod that increases a skill like Juggernaut (one that is temporary after you kill an enemy) but your actual skill is 0/5, the little skill picture you get after killing an enemy indicating that the skill is active doesn't appear.

Do you have to put a skill point in said skill (making it 1/5) or do you just have to unlock its tier? Or is it a Gearbox oversight? (One would think such a thing impposible) (just like me spelling words right)