Colobocentrotus atratus (shingle urchin?

[shcrimps]

does anyone have experience with these?
my LFS has one but it states not reef safe
quick google search says diet is coralline, periwinkle (snails?) and sometimes other urchins
it’s super small and i’d love to get it
but would like insight from anyone with experience in them before i go and get it
thanks!

 

[Gumbies R Us]

Honestly, I have never known anyone to have one of these urchins before. My vote is no on one of these urchins, especially if you have other inverts in your tank.