Doubt it, although I noticed my birdnests has an acro crab so maybe as long as the SPS colony is really branchy and cavernous inside the branches it would be OK.
This guy is in right now a (mostly dead) A. valida. As soon as he's out I'm tossing the colony. All I'm left with are 1" frags and those don't host crabs very well
And I don't know if acro crabs will get along inside a single colony so I was thinking I probably shouldn't usher him into my birdsnest.
Anyhow, apart from all that, apologies and thanks to all those who expressed interest, but he is pending pickup for tonight. If the person changes their mind I'll go down the list in order.