They take 2 minutes or less to remove. Just keep a spare tool in your car.I considered one but I sometimes need to fold a seat or two down for hauling things and the ones I've seen at least required some drilling to install so I'll just stick with upgraded rear sway bar though it does look sweet!
For my purposes, it's not going to negatively affect the interior storage space too much. In 5 1/2 years of ownership, I've put down the rear seats maybe 3 times. For the one time every other year that I might transport something requiring me to put down the rear seats, I can remove it in 2-3 minutes.I'd throw the under chassis unibrace on before cutting into interior storage space.