Yes, you can, that's the principle of Electrum and why I love it so much 
. However, I don't know if it will be in "watch-only" mode or not.
. However, I don't know if it will be in "watch-only" mode or not.If you restore your Electrum wallet with the seed, it will regenerate your private key and it will not be in watch-only mode. Protect the seed as if it was your private key.