rigid lamps are great...but their beam patterns are less than perfect. They have alot of spread...but not as focused as similar halogen counterparts. Their driving beams go fwd really well, as well as side to side...but alot of vertical spread too. Meaning in a foggy scenario, they wouldn't function like a proper fog lamp. Also, you'd not want to use them in traffic, as they can be pretty blinding to others.
Their spots have a bit of scatter to them too...but not as bad.
Floods I can only imagine would be horrendous in fog and traffic.
FWIW I have a 10" specter bar (driving beam) under my bumper, in the air dam area, and 2 10" spots on my roof rack. They are great lights...but fairly purpose specific....backroads use. We had really bad fog last week and I turned the specter bar on just to see how bad it was....and I highly recommend against it in fog
Quick pick of the beams against my garage. You can see the scatter I am talking about, it's more apparent in person.