Anyway, I got them home and expected them to dig under the sand and never see them again but they are all still (2 days later) sitting out and swimming around. They'll suck some sand in and shoot it out their gills trying for food but won't go in past their noses(mouths?)
Here's a pic...

Sorry, the outside of the tank is a little dirty so it makes it harder to see but that was the best picture I took. I also didn't know if they were too juvenile to discern between the species.
I suppose I'd keep them if they were long-noses, they are entertaining, but I'm afraid for the lives of my son's neons.
Thanks for you input!
-Thomas