>I guess I'm reluctant to eat acidic stuff out of plastic.
It might help to realize that plastics are extremely resistant to acids. Hazardous Industrial acid products, far stronger than anything a consumer can purchase, are stored in Polypropylene barrels. Generally speaking plastics are considerably more resistant to inorganic chemicals than even specially formulated metal alloys.[1](link even lists the resistant data for tomato juice :))
Additionally, metal used for canning is usually(always?) lined with plastic[2] to keep metals from leaching. Ironically canned foods with bpa liners are one of the biggest vectors of BPA intake we know of.[3]