You couldn't guarentee they wouldn't root, no
Some don't do it at all and others do it quite a bit, they're less
likely to do it and being snub nosed the damage is far less than the bigger pigs.
I suppose you could try keeping them together and just have a hay rack for the Kunes
But we've always run ours on grass, when there is grass
. When they're in, in the winter we give hay and hayledge instead.
HTH