Impossible? No, just unlikely.
The medium length Science Religion ambigram displayed to the left will look good on just about any product in the FlipScript store.
A quick glance will show you that you can read this as 'Science' when the design is upright and as 'Religion' when the design is inverted.
If you can't read upside-down (without breaking your neck!), rotate the entire design by mousing over it.
All items in the FlipScript store are already displaying the Science Religion ambigram. To see them, navigate to a category using the red menu bar above and your Science Religion ambigram will magically appear!