I understand you wanting DRL's and now that you have edited the OP, that is clear enough.
Your first Post before Editing just asked about Replacing Fogs with LED's. or Fogs and LED's, that was why i answered the way i did.
Sorry for the confusion,
I would imagine that if you were fitting DRL's to come on Automatically with the ignition during Daytime,
you would have them so that they go out when you switch on your Sidelights and Headlights.
& since you would have dipped beam on with the Fog Lights, the DRL's will be switching off.
I read the article...Just to let you know i'm not one of those drivers who uses the FOG lights for no reason.
The reason why i want to have the DRLs is besause i travel a lot in Europe and you need to have your lights on in majority of the countries which means that your call will use more fuel and your bulbs won;t last as long as these should...