The lights you use will ultimately depend on your goals. If your goals are to absolutely grow the biggest, healthiest plants, then you can use the growlights. If your goal is to grow some nice plants in an aesthetically pleasing way, you may not want to use the growlights.
The growlights may use a spectrum that's good for your plants but not so nice for you to look at. I've seen some growlights that were an awful pink/purple color that I wouldn't want to spend any time looking at. I personally prefer the 10k spectrum for my aquariums. It's slightly less productive than some of the 6500k (which is debatable) bulbs, but I just like the way it looks.