I doubt slight off-vertical camber would cause noticeable tire wear. Radial tires are very forgiving for that. You see many tuner cars with large negative camber set, and almost extreme in Indy Cars. Negative camber means the tires lean in at the top, which helps with hard cornering. Many 1960's cars w/ bias tires spec'ed slight positive camber, but most classic owners set it slightly negative with radial tires. Check your toe-in since that will cause rapid tire wear on the insides if far off (pigeon-toed). If too much toe-out (penguin feet), the car will wander on the highway. You can check it fairly easy and accurately with a tape measure (youtube's).

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1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans