Gibbs works well but when it comes to big game he might underperform. Thats from what I get from playing him. If he performs, he is the best wing back you will have. Fast and good crossing.
I have been playing him for 2 seasons now. He is now a regular on England squad. I like challenge and grooming up a average player into above average players. I don't like to start off with players who already got the name. Anyway Gibbs does works fine. Just becareful with your opposition instruction when you're using him. He is a good player for closing down since he is really fast. If you need someone to run down the flank he can too and got a good crossing. Pretty much already a good player but considered average if you consider famous names like bale and some others. Give him half a season and he is a star