How Good Is To Use Tab Bar Navigation In The Middle Of Screen.

I Was designing a andorid app. i basically wanted it to look like a hybrid IOS app. so plan was to get tab bar navigation in the middle of screen. and space on the top would be used as showcase panel of products. and that would slide up and fold when user makes a horizontal slide and tab bar goes on top adn gets fixed. and when user slides down it would appear.

please do suggest if this would work