No, they are not daytime running lights. They are lights to see with.
You noticed the GSs with the bright lights because they were being asshats and annoying traffic. And because you ride a motorcycle and naturally see bikes as well as other traffic. Conspicuity lights are a FAIL. The people that will see you anyway, still see you, now they are just now annoyed that your lights are aimed incorrectly too.
The people that won't see you, also don't see the 20 ton, bright red Fire Truck, with all lights strobing and siren blaring. You don't even cross the threshold into conscious thought to them because you are not a threat to their safety. They will still pull out in front of you, so EXPECT them to and behave as if they always will, even when they make eye contact and look right at you.
I SEE YOU, could care smurf all if you see me. ::009::
If you want some lights so people will see you, look into various LED lights that have dimmer circuits. At least that way, you can run them dim during the day and full on at night so they provide useful light past your high beams, which is how they should be aimed, down the road past your high beams. Coincidentally, this aiming is also up into oncoming driver's eyes, so will provide what you think you need during the day, but it's not necessary to blind them by running them on full power. The 530s are LED, but IIRC and not dimable and the fog pattern would be a waste, as the aim to be useful would not be the aim into driver's eyes. The driving pattern would work better for that. And you can spend a LOT less money if you just want to annoy traffic, rather than see at night, and still get the perceived results.
Try here, there is a range of different lights and some good info. The vendor is a good guy and known seller that direct imports.
http://ledrider.com/