Hey Karnal,
You can include the argument flag:
--data-dir /new/app/data/path
when starting the client on the CLI to change the application data directory that your wallet is pointed at.
On another note, I think you will be able to use the Recovery Key brainwallet mechanism in the web wallet to use the same wallet at different physical locations soon (so long as you have your brain key memorized).
Eventually the recovery key will be standardized to be usable across all clients AFAIK. Looking forward to moving my funds into a brain wallet specifically that can be used on the fly from both desktop and web wallets.