Like any change to your hunting setup, it takes some getting used to. Also, it's expensive. From reading these forums, it sounds like most folks are always tinkering/improving (i.e., there's no truly "perfect" setup). If you're indecisive, this compounds it because you can hunt anywhere in the woods, not just wherever you hung your stands in the preseason (if you're hunting private), so your options are nearly limitless.
I'm still new to saddle hunting, but I already have seen plenty of positive that outweighs the negative. It's fun, new and interesting, and I've really liked it so far. I'm sure I'll still sit in my old man's ladder stands at his farm from time to time, but for public and my own permission properties, I doubt I ever go back to traditional tree stands.
Hope this helps!