I bought the FlexCase to put my meanwhile 6 harps somwhere where they are protected and easy to reach. My Hohner Marine Band, Special 20 and Rocket, the Suziki Sky(s) and my Arkia fit all nicely in this case.
The storage space is made for the usual diatonic (Blues) harps - my other chromatic one does not fit, as these guys are way bigger than your 10-hole ones.
All in all, a nice case that I can definitely suggest for anyone with more than one harmonica - I am sure one cann fill any empty space soon enough!