I thought this was possible - I bought a Ronin and found a used s1000 and thought I had seen a video that showed them together but just realized (after buying the s1000) that in the video it was some other brand UAV. I just held the gimbal arm up under the the s1000 and it's definitely too tall to even mount below the s1000 and of course it's quite heavy but would have to be factored in to overall payload.