Are there other planetary systems where gas giants are on the inside to rocky planet orbits?
The Kepler-20 system has planets with masses in the following order, going outwards from the star:


Kepler 20b:  $\approx 10 M_\oplus$
Kepler 20e:  $\approx M_\oplus$
Kepler 20c:  $\approx 16 M_\oplus$
Kepler 20f:  $\approx 1.5 M_\oplus$
Kepler 20g:  $\approx 20 M_\oplus$
Kepler 20d:  $&lt; 20 M_\oplus$


If Wikipedia is to be believed, Kepler 20b may be a rocky world;  but at the very least, Kepler 20c is a hot Neptune and has a rocky planet (Kepler 20f) outside its orbit.