Oh woops I spoke to soon...you're right, the offsets in the Birth Voxels operator are for top-to-bottom rows only.
You could always create a plane object in max, offset the vertices of every other row of verts, then do a Birth Surface in tyFlow and birth on the verts.
You could always create a plane object in max, offset the vertices of every other row of verts, then do a Birth Surface in tyFlow and birth on the verts.