Yesterday I went to do some shopping and I wore some slim coral chinos with the ankles rolled up, some matching leather Dexter loafers with tassles, no socks, a preppy Tommy Hilfiger belt, a nice maroon hugo boss shirt tucked in, and suspenders, and a vintage red paisley tie. I had my sleeves rolled up and on my left wrist I had a nautical sort of themed bronze watch with a leather strap, and a kiel patrick james nautical rope twist with brass anchor wrapped around as well.
Just walking around, with composure and good posture, establishing a commanding presence, taking up space, etc., I noticed girls giving me so many more IOI's than usual, i.e. than if I've just ducked into the shops after crossfit wearing shorts and a t shirt and runners.
Girls were smiling towards, and they were like, really warm, welcoming smiles, not sarcastic mocking smiles. Wherever I sat down anywhere, within a short while hot cute girls would establish proximity to me and send furtive, adoring glances in my direction.
I've got no clue how to run mall game, so I just enjoyed the positive female attention I was receiving passively, but to answer the question with regards to "peacocking", I think yes.
If you can make yourself look striking and make people notice you, its only going to be a good thing. As long as you don't come off as a clown.
Heartiste had a good post not so long ago about how guys who were good at peacocking naturally scored higher on tests measuring the dark triad of womanizer traits: narcissism, sociopathy and Machiavellianism.
http://heartiste.wordpress.com/2012/12/05/evidence-that-peacocking-works/