This would be a really fun weapon to use in LARP combat. I would absolutely buy 2 or 4 (2 for my gf as well).
Just realized that image above doesn't work too great. So here are some additional links to info about Tonfa Blades and Tonfa Swords:
There's tons of other concepts out there.
Personally, I prefer the ones where there's a tonfa handle on the side of a solid blade. However, there are some where it is basically a sword, with a cross-guard that only sticks out to one side, which doubles as a handle.
I think that either of these concepts would be an amazing addition to your collection. I feel that a lot of people would enjoy this item.