Yes you are good to send and transfer coins and assets in and out of GHcloud as you please. Just don’t send your balance to a non-color aware wallet if the address contains assets.
Side note, as you know GHcloud addresses are very secure since the key to sign transactions is generated on the fly from your salt when you do sign a transaction and thus the private keys are never revealed. However, something to bear in mind is that the same doesn’t apply for imported private keys depending on where you’ve imported the key from.
For example, if you import a private key from Coinprism and (let’s assume) their servers ever get hacked that particular key could be compromised on their end. Thus I don’t import any “3rd party” keys to my GHcloud.