It is hard for me to believe that you can carry the same way all of the time.
Well if you want to split hairs I carry one of two ways all the time. Its either at 3 o'clock OR at 4 o'clock depending on my clothing.
If I'm wearing formals (tuxedo) for a black tie dinner I'm carrying either 3 or 4 depending on how tight my pants are. If I'm going casual and I've got jeans on I've got it at 3 if I'm wearing a sweater or sweatshirt and at 4 if I've just got a light over shirt. Shorts, t-shirt and over shirt gets a smaller gun (Bersa UC 45) at 4 o'clock. If its cold I'm almost always wearing my 1911 at 3 o'clock.
Thus far I haven't found it necessary to diverge from those two carry positions.
Oh and yes I do have multiple pairs of shoes and multiple types of shoes. I don't wear the same shoes for every occasion.