I think we will see something similar, but in a lighter version.
This also depends on the price of BTG after coming to exchanges.
The BCH story showed that you can earn good money on selling forked currency, so people think this will be another case
Last time all exchanges add this to the moment, but here on bitcoin gold many refuse to do this, just few exchanges have add bitcoin gold. Many dont want to have anything to do with it but maybe they will add this later if demand comes to some point they have some interest from it, i dont see any other way.