I contacted VN support, and they mentioned there’s no E+ for flights operated by Pacific, but I’m not entirely sure that’s accurate. It might only apply to the pre-grounding codeshare agreement with Pacific, as it doesn’t seem logical for a wet lease.
I understand there won’t be E+ lounge access (I’ll be using Priority Pass for that), but benefits like priority check-in, boarding, and baggage handling could still offer some value.