It means shrimpboy hasn't kept cherry shrimp before, so can't comment... but they have seen amanos eating crystal shrimp.
Tiger, as far as what I've researched, it's really hit or miss.... there are *plenty* of stories of amanos crawling out of their tanks and going for a walk-about through the house. People usually find them within 20' or less of the tanks, but sometimes they make it further. Sometimes they find them alive but covered in dust, other times they have dried out. I've never personally had that experience. I've also seen amanos hunt fish, there's even a couple of videos with amanos hunting fish/shrimp... but that doesn't mean that *YOUR* amanos will.
You will only know if you try. Since amanos are such pigs when it comes to food, it would probably be easy to get it back out. Also, there's a chance that your amano tank isn't growing the algae that's in the cherry shrimp. Me personally? I'd say go for it!