Personally I EDC both a IFAK (AMK Ultralight & Watertight .7) and my pocket trauma pack. I've been victim or witness to Murphy's Law too many times to not want to cover all my bases.
The Army IFAK I was referring to is this one:
http://www.armyproperty.com/Resources/NSN-Listings/IFAK.htm. I've added better and more tape, a CPR facemask, better gloves, shears, a dose of aspirin, a dose of Benadryl, petrolatum gauze, and a tension pneumothorax decompression needle. Thank goodness I've only opened it up for training and restocking. The regular FAK in my BOB gets a heck of a lot of use, though.