I have been using it lately and like it fairly well. I just hate how clunky tab switching is, the fact that the search bar isn't as great as Chrome's, no pull-down refresh, and how the tabs don't stay in the order you initially opened them as they reorder to put the most recently used tab in the foreground(oh, and no tabs open open in the background - unless I'm missing something).
It is surprisingly smooth and less memory-intensive, though.
The tab switching is quite smart once you get used to it. I am using 7E and i can easily switch tabs using one hand. Because it is placed in the lower right corner, my thumb can reach easier than Chrome's top icon.
Yes the search/address bar is a bit jerkier than Chrome when accessing it. But you can put quick access websites on it.
Yes no pull down to refresh is the worst.
However as mentioned, the secret mode is beasty, only accessible with my prints. And the ability to hide even the status bar, i can view GAF on the full 5.5" AMOLED screen! Put on adblock+ for S7, and it makes websites load faster and save on the data charges.
I cant believe till this day, i am on a Samsung stock browser! I dont believe in 'oem stock' stuffs before hand.