I learnt this in a sales seminar when I had a second job as a mortgage broker. Glasses, ties and suits create barriers an open neckline and a relaxed body shows trust and confidence.

I wouldnt hide behind glasses be the man you want to be and be confident while doing it. There is never a place for sunnies if you are trying to build trust it just isnt congruent.

I live nr the Gold Coast in Australia and I wear sunnies daily but not when gaming. I also wrote more than a millions dollars a month in mortgages without a tie and jacket and put them on 30 year contracts. You need to build some serious trust when dealing with peoples money especially the biggest thing they will buy in their life. Ties and suits are good in the corporate environment but not good for comfort building or trust building exercises. The whole suit thing is preparation for negotiation and power play. Gaming is about trust/rapport comfort/attraction and then seduction. I am not sure a girl would trust a guy they couldnt see but the act of moving your glasses up when you talk to her would send the signal that you have her attention and you are comforatble and allowing her to trust you so that could be a good move to try in the field. I normally take mine off and hold them in my hands. Hand the sunnies to her pull out your mobile phone ask for her name, put it in your phone then ask for your sunnies back while you hand her your phone so she can put her number in. Put the sunnies on her and tell her she they dont suit her bit like kino. Good sunnies would be Oakleys, Rudy Project, Prada, Arnett big is the go at the moment with designer stuff so check out D&g dolce & gabbana etc.