I had both driving and fogs on my previous 4Runner, I really liked the setup.
I had Hella 500's for driving lights, and Hella 550FF for fogs. Not the highest quality light on the market, but they did very well for the money.
The problem with trying to use one light as both a fog and driving light (ie: IPF J-01) is mounting position. You're gonna have to make a compromise, there is no optimal location.
Fog lights need to be mounted LOW, so they can cut under fog and poor weather, and illuminate the road surface. Driving lights need to be higher, about headlight height, so they can acheive distance and trajectory.
My current truck has a set of Hella 550FF's hanging under the front bumper.
They are fabulous there. Very broad pattern, not anoying to oncoming traffic, cut under the crummy weather, perfect location. I'm sure I'll be replacing them with a better quality light someday, but for now they are working. I also have upgraded my headlights to Hella E-codes, and I have 100W high beam bulbs, and a heavy wiring harness. Excellent lighting, but I know I will be putting some aux driving lights on the bumper too some day, just inboard of the headlights.