While there were a few annoyances, it is one of the best visual web editors I've experienced, and it only took a few hours to redo my home page, without watching any of their training. I am impressed.
The site I'm redoing was built on bootstrap. The results on nicepage looks close to identical, but it was much easier to make versions for different sizes, as I could rearrange elements however I wanted, allowing me to customize my site more than I can with bootstrap for different devices.
The code even looks reasonably clean compared to what I've seen from other visual editors.
So, while the article was all about these more artistic layouts, it's a pretty good tool for putting together a "web 2.0" site if you don't feel like coding it yourself. No way I could have done it that fast by hand, and the results are good enough for me.