I’ve got the white silver air attack shield and use it too .
I find it hot as it has very few vents compared to my other aero helmet the ballista. I’m talking 32 deg c and above.
With the da brim it is a 4 “ visor attached with Velcro to the helmet. It’s a cycling accessory.
It gives so much shade I don’t need suntan lotion. You learn to angle the peak especially on fast descents above 60 klm/ hr. The visor can also be moved to suit the suns position.
I've had 3 different DaBrims.
On long tours I've had mixed success. The DaBrim often needs to be re-adjusted in order to stay on the helmet.
When descending very quickly, it can warp and either attempt to fly off the helmet (top), or attempt to prevent you from seeing the road.
Keep in mind I'm talking ~95 km/h here, which I did multiple times. On slower descents similar things happened if I happened to have a headwind at the same time. It was not fun to have to take a hand off the bars during the descent to hold the brim.
I have zero such issues with the faceshield, I'd guess primarily because it was designed that way. I was pretty sad that I'd not taken my 'bastardized' brim (made from a BMX visor attached with zipties) given the fast descent issues.
Sun protection wise:
I've had burns on my cheeks and back of neck after hours of riding (10+ in Florida sun after a few days) with DaBrim. It wasn't DaBrim's fault, but it couldn't prevent it either.
The faceshield provided more cover for the top of my cheeks and around the eyes. Turns out you can get sunburn from the *reflected* sun off the road after enough time, unless your face is actually covered from both top+bottom.
I've learned that the "best" strategy is a 'sun bandana'/buff + a helmet that really covers your face!
My best may not == someone else's best. My skin may react differently to reflected sunlight, yadda, etc.