I haven't used those but here's my two cents.
1. I can't tell much from the page/video, including if the bulb is separately replaceable or not..."sealed" typically means it isn't, but they list bulbs? Maybe they meant sealed-beam replacement.
2. The bulb coating appears to make the light "whiter" than standard quartz halogen (about 3200 degrees K, less if it's tungsten-halogen) so it looks more like an HID (maybe 4200K) or an LED (5K or higher?). FWIW, when I'm driving in heavy snow I've found amber fog lights and/or quartz-halogen H4s don't send as much glare back at me as HID or LED sources.
3. I'm more interested in the pattern, which from that reflector and the videos, looks kind of flat/uniform. A euro-code H4 (and I have them from Bosch, Cibie, Hella and Marchal) or even Hella's DOT-legal Vision Plus offers IMHO a better pattern, especially on low beam. Another FWIW, between myself and friends we've been running euro-code headlights in >30 vehicles over 40 years and not one has been pulled over/ticketed...for lights at least
. Between us I know of one H3 fog light bulb and one H1 high-beam going bad...just don't touch them with your fingers at install.
4. The euro-code H4 high-beams on my truck work for me to about 60 mph in "observatory" darkness, and I have a pair of driving lights that fills in the blanks up to my 80-85 top speed. Your mileage/vision may vary.
Hope that's helpful, holler if I need to clarify.
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