Multiple User Web Browsing on Your iPad With Switch

"Ever get nervous leaving your iPad around with your email account logged in? With Switch, your browser is protected by one password, automatically enabled when the screen is locked."

Interesting concept, but according to some of the comments it is a little buggy. But the iTunes page [link] has some info that they are waiting for Apple to approve the bug fix. If it works as it says, and some of the comments lead me to believe it does for the most part, then I think this would be a great way to use your iPad and not worry about things changing on it the next time you use it. At $4.99 USD it is a bit on the pricey side. Have any of you used this? If so, how has it worked for you?