They will for only one specific reason : Will be easier for people to get their free BTG and coinomo would have more downloads.Also having people's private keys is not a bad thing at all
Yobit first announced that they will trade and they probably have everything prepared.
But in last few day they have quite the support from some exchanges wallet and pools.
So i guess they will be good after all.
YoShit is a shithole of shitcoins.They will even put a dick coin on the exchange if they read about it on some blogs.I'd think 100 times before I sending bitcgold there.As we have seen how bad are the network conditions in the early days of the fork,it is a safe bet to not trade coins/store them on shady wallets.