Nice one! Downtubes on NZ built Twentys were conspicuously absent so it's possible you could take them off so it looks more like a commando - though this will remove some of the bombproof stiffness.

If you 'Go Commando' then you must try and source fit one of those gun-muzzle styled chainguards to complete the effect! The font is called Futura Black if you need to remake some Decals