I was actually thinking about another usage: adding additional "permanent" storage to my 128 GB MBA via the SD card slot.
There's a Kickstarter project (Nifty Minidrives) that are selling miniSD card caddies that sit flush with the MBA SD card slot, so you can permanently leave an micro SD card mounted for some additional storage. In theory, being able to pool the storage with the (faster) boot drive would be great. In practice it'd probably be flaky and a bad idea (especially at current SD card capacities). But something worth thinking about for the future...
There's a Kickstarter project (Nifty Minidrives) that are selling miniSD card caddies that sit flush with the MBA SD card slot, so you can permanently leave an micro SD card mounted for some additional storage. In theory, being able to pool the storage with the (faster) boot drive would be great. In practice it'd probably be flaky and a bad idea (especially at current SD card capacities). But something worth thinking about for the future...