Good evening gentlemen and thank you all for the advice and information. I think I will follow the advice, and my own instincts and leave her fairly plain. I shall taper the handle a bit, and probably round of the end slightly, and maybe add a hole for a leather loop. What you see above is the rough cut with just the saw-cut edges rounded off at the end, about 5 minutes after I hammered the re-shaped ash-wood stave to fit the head.
As for impressions I am working on recrating my 7 Years War 'look'- Colonial militia & French milice. A plain look is right for both. A lot of the re-enactors here tned to over-decorate their kit and themselves, but I will not do that. I shall keep it plain & practical.