Quote: " think I heard somewhere that all pre-order customers are to receive a Steam key for GameGuru Max."
Running both versions was found that it can cause conflicts ( Not considered at the time ) so as you can only run one version anyway rather than cause issues, bugs that are not there it was decided to allow users to change to a steam key if they wanted to via Customer Support so you can still have one.
The Booster Pack was given free to all Pre-Order Customers though as a thank you for the support.
No one ever really leaves.