Using a treestand is great for being able to see in all directions. I will use a stand if its already there and I can get to it without making noise.
Most predator hunters don't like to use them for a few reasons. Mostly because when your out calling you want to get in & out of your spot as quickly and quietly as possable. The extra weight, noise, and time to set-up and take down a stand, and the short time spent calling, makes it counterproductive.