I have not owned one, but have dealt with 3 of them through conducting carry classes and ROing for our summer pistol league.
Two of them were 9mm, the other was a .40 S&W.
One of the 9mm worked OK. It seemed accurate, although I personally did not care for the clunky trigger pull. You could get rounds on target, but it took a LOT of attention and a slow steady pull on the trigger. I have an old trigger pull gauge that only goes to 4 1/2 pounds, the trigger pull was significantly more than that. It was a hot day, and it didn't take long before it was very difficult to hold on to the slippery grip.
The other 9mm, at 7 yards, had 7-8 rounds out of 10 shots keyholing on the paper. It functioned reliably, but the barrel was so bad bullets were striking the target sideways at only 21 feet. The owner took it back to the dealer, who sent it to Hi Point, who replaced the whole pistol for free. The replacement seemed to work fine.
The .40 S&W had the identical problem described above, bullets keyholing at 21 feet. It was resolved the same way, I never heard how well the replacement .40 performed.