I think the gun has some potential in the personal defense roll for use against two or four legged predators. While a double in the role of a bear gun is less attractive than the repeater, there is no reason why it should be discounted out of hand. This particular double is likely to leave the traditionalist cold, but these days traditionalists are often left cold.
While I'm not a fan of single trigger applications on doubles, given that this gun is designed to be attractive to the non-gun enthusiast, I understand the logic; it's just unfortunate that a double trigger version is not an option.
The link does not say how the extraction/ejection mechanism works and this is a serious concern with any firearm used in the personal defense roll. While ejection is normally the preferred method of removing empties from the gun, if it relies on a spring that isn't up to the job, or it the ejector does not fit its recess particularly well, it might not work at a critical moment. Extractors are often more reliable, and again this is where a factory option would be nice. Those of us who carry firearms for protection know that the gun we entrust our lives to must be tested frequently for reliable functioning. If there is a hiccup, that problem must be corrected before the gun can be put into service. The non-enthusiast might well overlook this.
A butt cuff for extra ammo can be a double edged sword, in that while it provides you will ammo and the gun simultaneously, it all but prevents the piece from being fired from the support side. The wood stock allows itself to be easily drilled out for an underside shell trap, which might be a better idea. Personally, my choice would be a few shells carried on a belt holder.
The under barrel rail provides a secure mounting point if a sling carry is desirable. A sling swivel that attaches to a rail would have to be fabricated as I am not aware of any commercially available swivels designed for a rail attachment. This is certainly no reason not to make one.
All in all I think the concept is sound, but I would want to have the opportunity to examine one before I said it was suitable for self defense. Given Benelli's reputation for quality, the gun is probably quite functional, but often I have seen what appears to be a good idea in a picture only to be underwhelmed by the actual product.