I know a few of us, including myself, have purchased the sticker from seller 'rjcalnan', no affiliation. High quality sticker from a seller with good feedback and he sends two, which is nice, because the potential for messing up the first attempt is high. Got mine two years ago (silver) and still perfect. "No" to your specific questions, but I haven't tried to remove it.
06 987S- Sold
Carrara White / Black / Black/Stone Grey Two-tone
05 987 5-speed - Sold
Midnight Blue Metallic / Metropol Blue / Sand Beige
06 MB SLK350- Lease escapee
Iridium Silver Metallic / Black
We've heard that a million monkeys at a million keyboards could produce the complete works of Shakespeare; now, thanks to the Internet, we know that is not true. - Robert Wilensky
I love it: It looks like it was etched into the plexiglass. It went on easy.
The good thing is: the "Porsche" letters are below what you see in your rear view mirror. So the only thing in the mirror is the Porsche logo, and I hardly notice it.
So no obstruction of view and good quality
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I still wave at Boxsters, but they no longer wave back :-(
2002 Boxster S "Violet" (sold but not forgotten)
2009 Carrera 4S "Kelsey" (current ride)
2015 FIAT 500e "Nikki" my commuter car