I agree with David and it seems to be obvious that scabbard is a representation of a church.
But I DON'T AGREE with an upside down theory which is just a wishful thinking here, I suppose, and the result you
would like to see it upside down.
First: if the scabbard represents a church why the upside down crosses, or - I'm not familiar with stanic symbolism - but do they ever picture churches upsidedown
Second, and most important, the image with hilt downside is the proper side! Take a look at the most of the European swords, and blades inscriptions, including crosses (i.e. Hungarian ones) - with your theory every one of them would be satanic, upside down!
Regards!