It's nice that it is Webkit based but the interface isn't great; for example a lot of wasted space at the top due to the very old fashioned menu bar. Hopefully it will come in to line with other KDE software like Dolphin and move to a hamburger style menu? But regardless it is generally a little clunky and old fashioned.

I think realistically, Konqueror is just too small a project to be able to compete with Firefox or Chromium. It's great that it's maintained, but a little worrying that the last release was in May when internet security risks move very fast. I'm not sure I could in all conscience recommend it but I'm happy to be corrected if these concerns are misplaced?