There's no way geoengineering will be consequence free. I think when we start using it as a temporary measure it will become very clear what the downsides are, and that reducing our emissions are still the best path forward.

I just don't buy the apocalyptic doomerism so breathlessly described in most books on global warming. When it gets bad enough, we will act. It won't be ideal, but there's no way we're just going to sit by, accept our fate and let the world burn.