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Looks like it

Built-in Pusher
InstallerApp comes with free built-in Pusher — software that can install Installer.app on your iPhone without “jailbreaking” it, so you can use App Store and Installer simultaneously without putting your private data at risk. By default Pusher will not install a set of command-line utilities and unlock the system partition as it’s usually is done by some popular jailbreak solutions and may lead to additional instability of the iPhone software, but it will do so if that is what you want.

Interesting... I'm gonna play with it, see how it works.
 
It's a modified quickpwn that only installs Installer.app and blocks access to the root partition, which pretty much negates any usefulness of it.

It uses the exact same method as quickpwn to jailbreak an iPhone so it's not any more legal than quickpwn is.
 
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