I really don't it's useful because even if someone sends a transaction to your wallet, the balance will still never update because the wallet is not connected to the internet. I think it is just like your holding a paper wallet.
In my opinion, It still a good option to just store a private key open it on an online wallet rather than installing an offline wallet.
Note: Wallet Installed in PC is good to avoid misleading or phishing sites.
But there are only few wallets that accepts many altcoins, its myetherwallet or metamask the most that is good for placing our Alts in a wallet, though it will be good if there is an app for myetherwallet now.