Its a dodgy subject around girlfirends, Ive had one try and use it against me after a break up, but current gf is fine with the gear use. I think if it doesnt interrupt with their life at all or you dont rage out and slap em, they'll be ok with it.
Sounds like yur missus is pretty understandin mate, hope it all works out well.
Homebody my wife hits me too....she seems to have a knack for it....never any pain, and knows exactly where to hit. Thank GOD she didnt flip when I told her.