I have grown that Stromanthe in full sun and it didn't blink....but looks better as an understory....
I sympathize with your battle with slugs...we have them here and they carry a potentially deady disease ... so all leafy vegies have to be cooked. I bait for them.
I also find that for plants growing in containers, putting a band of 'Tanglefoot' (a vasoline like gunk used to seal off pruned limbs from trees) keeps them down.
