Right. I've had one case where index rebuild times kind of mattered, and gist was definitely a lot faster at rebuilding, though not enough to make it worth taki

Right. I've had one case where index rebuild times kind of mattered, and gist was definitely a lot faster at rebuilding, though not enough to make it worth taking the hit on read performance. But this was pre-9.4, so it may be rather different now. The nature of data being indexed is probably the biggest determinant: gin is really happy when you have a small number of distinct values across a large dataset; I guess at the opposite end of the scale gist might come into it's own.