The Hi Power is a cool gun, and fun to shoot, but IMHO a poor choice for self defense or concealed carry.
Yes, the grip feels pretty good, but that's it's only redeeming quality other then it's fairly high capacity mags.
If you send one out to a good gunsmith, like Cylinder and Slide, and have it slicked up, some reliability work done on it, the springs changed out, and the mag safety removed, it gets a lot better, but out the box, I wouldn't have one.
The safety in every configuration made is inferior to a good 1911's safety, and the 1911 is more reliable, and more accurate. Also, the slide is hard to get a grip on it you need to cycle it in a hurry. It's a cool gun but badly over rated. It's also heavy, even though it fairly compact, except the grip is a bit fat to conceal. I also shot one in IDPA, some, and I seen more jams in matches with the Hi Power, then any other gun, except maybe a CZ, they need to be kept cleaner then most other pistols with stock springs to work reliably. Out of the box, the hammer spring is too heavy and the slide spring is too light to be dead reliable to strip the next round from the mag and go into battery, sometimes, especially if the gun is a little dirty, or it's cold outside.
That's my experiences with it, which I am sure are not always the same as the experiences of others.