  We demonstrate bi-chromatic adiabatic magnetic shell traps as a novel tool
for matterwave interferometry. Using two strong RF fields, we dress the
$|1,-1\rangle $ and $ |2,1\rangle$ states of Rubidium Bose-Einstein Condensates
thus creating two independently controllable shell traps. This allows us to
match the two traps and, using microwave pulses, create a state-dependent
clock-type interferometer. Given the low horizontal confinement of the
interferometer, the atoms can be made to spread out thus yielding a 2D sheet,
which could be used in a direct imaging interferometer. This interferometer can
be sensitive to spatially varying electric or magnetic fields, which could be
DC, AC, RF fields or microwaves, or even local variations in gravity. We
demonstrate that the trap-matching afforded by the independent control of the
shell traps allows long coherence times which will result in highly sensitive
imaging matterwave interferometers.
