Do you have these armors yet? If so, then use them; they'll be fine in FSC. But if not, then consider not getting them. There are far better and far cheaper loadouts that you could get.

Arcane Salamander Suit can be crafted only in the Shadow Lairs, so it's expensive. And it's really not very good in general, because it offers offensive bonuses against monsters that deal piercing damage, but it has elemental instead of piercing protection. The elemental protection is good in FSC, but the offensive bonuses are nearly worthless in FSC.