We don't support the ODS offsets on anything other than the base pass. So light maps should work, but many other things including dynamic shadows will be incorrect as the integration stands currently.
Shadows appear offset when using Omni-directional Stereo capture (see attached gifs)
Result: The shadow in each eye appears inconsistent (see attached gif)
Expected: The shadow would appear to be in the same place in both eyes
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-75610 in the post.