If you trim their crests, they get back into their pens just fine. They're still ditzy, but the pros outweigh the cons for me.
If you want lap birdies you can pet and just have fun watching, I would totally recommend them... If you want range wary, high production birds with brains, nope.
I...
I call my sultans (similar to polish) dumb poofies, and it fits them... I keep them around cos they make me laugh, but sometimes their brains or lack thereof are rather annoying. Like when I have to go for a trek through the weeds to rescue one of them that got lost free ranging. :rolleyes: