I'd honestly have to say that I've seen them in person in day and night conditions and they look great at night (like pretty much any light would), but I'm disappointed with the daytime output compared to whelen and federal signal products mounted elsewhere on the same vehicles, and the HG2's were almost invisible when observed from anything more than a 90 degree angle. IMHO, the HG2 runners are the same idea as the sho-me by the inch: a nice idea for lighting in narrow spaces, but lack a punch/footprint. I know that linear products require a little more size, due to the reflectors and other components, but I think that it'd be we'll worth it to look into expanding into some linear technologies.
As for the interior light bars, in order to compete with the top manufacturers, IMHO, you'd have to have lower pricing and multiple flashback shield and mounting bracket options available.
As for the license plate bracket, it looks like a fun idea, but a bit tacky and toyish-looking. If I were going to buy one, I'd only buy a bracket with a strip if lighting going across the top (not all around) the LP