Walter thanks for the heads up. No matter lps or sps. It'd always recommended that you dip. Aefw aren't the only pest around that could potentially destroy tanks. That being said there's beautiful tanks and stunning setups, but little do you know they have Aefw infestations going on. They are just in a controlled environment . So doesn't matter if your buying from a swap or someone's house where you've personally seen their tanks just dip. I'd dip even if I bought from you Walter (no offence)
However in the end it is up to the hobbiest themselves to decide weather to dip or not. Everyone's read and heard about the stories.