Quick question about splitting Bitcoin Cash from Bitcoin with Electrum Cash.

Is it advisable not to install Electrum Cash after Electrum 2.9.0 has already been installed? In this instance, can I not just create a new wallet in Electrum, move my funds from the wallet that has been forked to the new one, than use my private keys from my empty post-fork Electrum wallet in Electrum Cash?

Is Electrum and all it's wallets compromised since Electrum Cash has been installed? Will I lose my access or something happen to my Bitcoin in my new Electrum wallet with new seed/new private key if I use my post hard-forked private key in Electrum Cash on a machine installed with both Electrum and Electrum Cash...?