Well, it's certainly a cool-looking firearm, but I'm really not sure where it has any advantage over an ordinary shotgun. I mean, it's shorter in OAL, but then again, so is the Mossberg 590 Shockwave and Remington TAC-14, which are substantially lower in price, not to mention smaller in overall dimensions, and lighter in weight. Also, it holds an equal amount of rounds in the magazine compared to the Shockwave.
That being said, I wouldn't worry too much about having only a 1-Year Limited Warranty. I'm unaware of any shotgun in current production which offers a longer warranty than that, so if you're confident enough in the brand to buy one in the first place, then you're confident enough to do so regardless of the warranty period. (A warranty is only as good as the company who backs it, after all.)
If I were you, I'd browse some videos on YouTube or Full30, see what folks who have owned/fired them think.