As long as it has no pressure on the neck/headstock it should be fine on it's back. I'd be a bit worried about the neck protruding in front though in case of SMIDSY which is why I'd always thought of some kind of side-car arrangement.
@Thoma started
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As long as it has no pressure on the neck/headstock it should be fine on it's back. I'd be a bit worried about the neck protruding in front though in case of SMIDSY which is why I'd always thought of some kind of side-car arrangement.