They're going to be extremely popular. For a home defense gun, they'll be hard to beat (for what it's worth, I read that the trigger issue was on a preproduction gun and it will be fixed before they roll off the line for real). Problem is, it's a new design, so it's anybody's guess how it will work and hold up, and it's also rather pricey for a pump gun- $800. For that price I can go to my local gun shop and get TWO 870s with the 6 round magazines.
It looks interesting, a lot of guys will be jumping on them, but it will likely be one of those "love it or hate it" designs, with the main dividing line being one's purpose- if you like guns for defense you'll love it, if you're into guns for hunting and that kind of thing, you won't.