stick-on trunk spoiler?

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i've been looking around for a small trunk spoiler to mount on my 07 sedan. i don't really like the factory-style, but have seen some 'm3' styles online that i like. they advertise as being attached with double-sided tape and i wonder if that is very secure? it's really just a small lip that curves around the corner of the trunk above the toyota logo. they don't have a third brake light because the lip is so small and i actually prefer that!

i don't mind drilling into the trunk if that's what is necessary, but i don't see anything in the style i like other than tape adhesion. my other concern- obviously- is durability. abs is better than fiberglass from what i understand, but does anyone recommend anybody that will ship it properly?

i plan on spending the money to get it properly painted/sanded, but i don't want to spend so much on paint/labor for something that will fall off my car!