I would guess that the main reasons for wanting one of these would be
a) size (smaller than a DSLR but the same quality of photo)
b) good quality sensor (same size APS-S sensor)
c) good quality lenses, on par with DSLR lenses
d) sometimes a DSLR is too big and in your face in certain situations
You already have an Olympus DSLR which is pretty small, are you going to sell it to fund this new camera or will you keep it?