Lockers don't help with traction.
Sorry but I don't understand this.....I put lockers in my truck, To help with traction. That is what they are made for.
I have never lost control because of my lockers. They do require more steering effort when the front is locked, But it's minor, and dosn't affect steering radius, and I'll never give up my lockers, BTW most peeps I know with front lockers drive in 2wd until they need the traction then engage 4wd. This eliminates steering problems for the most part.
They help in mud and snow, Biggest problem I see is sometimes they don't unlock and will cause the rear to come around if you aren't prepared.