Ah, excellent!
Adam linked me to a decent sword frog for a single boffer, so I'll try that and a steel ring hook up. Next step is to sort out how to add a simple, non-intrusive crossguard (I was also suggested even just adding an extra layer of foam above the handle to make a 'bulge' would work- so I'll give that a go first).
TO YOUTUBE.
I've got one of those hoop-strap-hoop things coming, so I'll give that a go as a back up, but it seems that just throwing a sword frog/rings on the left side of my belt is the way to go.