I only remove it unless they want to keep it. I asked you, you said you did not want to keep it.
Chances of bricking once a9lh is installed is slim to none. My warranty covers it if you were to brick, you ship it back in, I fix it, ship it back out.
I know, it was my choice not to keep it. My n3ds is brand new, so I was hesitant to make permanent modification to the outside. You gave me the same advice and warranty info when I made the choice. I was just confirming for all.
I hope I get a "surprise" similar to @althinta very soon!