As you can expect, the Hi-Point carbine (not familiar with the handguns) requires a few tools to take down for a thorough cleaning. Its not difficult though and each hardware item is "oversized" so its easy to engage the tool and there are no fears about stripping out screw heads, etc. It is more like a well thought out work horse than anything. It does come with all the necessary tools (and a key tool fits inside the foregrip for storage). Compared to say an AR, the rifle takes several minutes longer to break down. But, the cleaning process itself is quick (similar to a semi-auto .22).
When compared to other rifles in its class, I wouldn't consider it to be bulky at all. I haven't seen the earlier versions first hand, but the latest version has a skeleton stock (and looks a lot better in my opinion). The gun is balanced well and though its compact, it fits nicely in all the right places when firing. The carbine is a bit heavier than you would expect, but personally, I like the feel of a little heft in a long gun. Talking with another member here (AWick---friend/co-worker and knowledgeable gun guy) the Hi-Point handguns are a bit heavier and a bit bulkier than their counter-parts, but they are built solid and perform very well.
I also wouldn't call it a disposable gun. Yeah, its priced low, but I honestly feel like its a good value. Just because its cheap doesn't mean its disposable
I've been fortunate and have had extremely good luck with every firearm I own and all have functioned flawlessly every time. The Hi-Point carbine is no exception.