I agree a classic waki proportion 'sword' in sr77 would be very handy.
I believe the smachete was developed by Captains Sykes and Fairbairn after they did the classic Brit 'Commando dagger'. I think the name comes from the fact that they said once a soldier got the thing in his hand he knew exactly what it was for and how to use it... Literally it was a fighting "machete" for "smashing" the enemy on the 'Atlantic wall' of France...