Hi,
I am using local Ethereum(Mist) Wallet. I just installed Ethereum Classic Wallet and when I launched it blockchain was synchronized(same like on Ethereum Wallet) and my Ethereum wallet account is also there. What's the deal? I can use both for holding both ETH and ETC wallet accounts? By the way I'm on macOS.
you can't run the ETH Mist wallet and the ETC Mist wallet on the same system, use different computers or run a Windows VM inside your 1 computer and load the ETC Mist wallet on that.