You must not have read very well. As Doc2005 mentioned, there are plenty of threads on the subject, and not all of the posts are about how ugly it is. As an owner, I've read many of them, to see what others think, compared to my own opinions. When it comes to functioning -- as opposed to functionality, a distinction I'll elaborate on below -- I think there is a good consensus that this gun functions extremely well. Whereas the hipoint handguns are often ripped, not just on looks, but on reliability, I've heard or read few complaints about the carbine's reliability, and much praise. Add my voice to that chorus. With the standard mags -- the 15 round addons are jammomatics -- it is very reliable. It is as accurate as I can shoot it. All in all, a good, reliable, fun gun.
But to me, functionality means something different, i.e. having to do with its suitability for a given purpose. What is it going to be used for? The key thing is to remember that it is shooting a handgun cartridge, not a rifle cartridge. In 9mm (what I have), it happens to be shooting one of the flatter shooting handgun cartridges, which gives it some reach, especially compared to a handgun. But it is still a handgun cartridge, and it loses energy -- of which it didn't have a ton of which to begin -- fast.
I see it as a low recoil alternative for short to medium ranges -- 25 to 50, up to 75 yards -- for youths or women who cannot handle a full power assault rifle or mbr. Otherwise, it is just a fun gun, a good plinker for 25 to 50 yard shooting.