I would bet that most people on this forum already use an "offchain" solution, in that they do not maintain their own full node.
SPV wallets are not off-chain, yet they don't have a full node.
If you're using a website or an app to manage your funds, you won't notice the difference when your transactions aren't individually sent on the blockchain, but instead bundled up with all the other petty transactions and sent at the end of the day/week.
But what if I don't? What if I use an SPV wallet that needs access to the blockchain to work?