I just received my FKT vest in the mail. I was immediately, upon wearing it, disappointed.
Maybe on the long run it will work out. However, compared to my last Ultimate Direction vest I don't see how this one can match up. If my old vest I placed my plus size iPhone in one of the water bottle pockets. In the FKT vest, the phone pocket is too small. The water bottle pocket is less then ideal because of it's odd shape. The phone would bounce around. I don't know where a plus size phone can fit.
In addition, the side pockets at the base of the vest are not very user friendly. I might be able to stuff things into them but I can not readily access materials while on a run as I can with my other vest. Use of the pockets require that I cease running while using.