Saw it at Core, got a quick demo. District rear light is stupidly bright. You will be seen definitely, but I suspect the odd motorist may run you down anyway, as he can’t see anything after being blinded by aforementioned light.
As for the new front one, oh my god, its just ridiculously bright. Football stadia floodlights sprang to mind. Currently only run the top mode for 10 or 15mins anyway and then automatically drops down to 1800(!?!)lumens. I guess because of heat issues, or it’ll flatten the battery in another 15mins. Impressive? Yes. Overkill? Absofrickinglutely.