I enabled Multitasking gestures for a friend's iPad 2 (he didn't want to buy Xcode 4). I plugged it in, clicked "Use for development", and then did *not* sign in when it prompted me for my Apple developer account.
Multitasking gestures was still enabled on his device. It just wasn't added to any developer profile or anything.
Also, my iPad 2 is running 4.3.3, and Multitasking gestures is still enabled and working.
Some posts make it sound like you can no longer enable it on 4.3.3 - but it still works if you update to 4.3.3, while the original post makes it sound like it is LOST if you upgrade to 4.3.3, which I know isn't true.
Yes most of us enabled multitasking gestures by just using the Use for development button in Xcode 4. But that was before iOS 4.3.3. I know the gestures still work in iOS 4.3.3 but we are asking if you can still enable them in an iPad that is currently running iOS 4.3.3. From what it looks like you can't, we do know that if you enabled them prior to iOS 4.3.3 and then later upgraded they will still be enabled.