Baby acanthuses (acanthusi)?

I've got two dinky acanthus mollis babies, about 6" high in pots. Grown from seed, but germinated and grown outside without cover. Will they be alright to overwinter outside or should I bring them in?

 

If they are anything like mine, they are pretty impossible to kill! But maybe give them a few more months tlc just in case

 

I am just on the paranoid side, it took me 4 attempts and about 30 seeds to get any to germinate (and then only 2 of the 4 that did made it) so I don't want to kill them now!

 

I know once established they are pretty hardy, but with one year old seedlings I 'd be a bit careful.