I'm a bit like that. My left hand is pretty much useless. My kids find it hilarious when I throw them something with my left hand and it goes in the opposite direction...
My Ex was left handed and like Naz...he can hammer too. He is a chippy though. He played darts with his right hand...most sports actually..but couldn't write with it for the life of him. Weird.
What use to make me laugh...he'd cut bread with his left hand...and then always turn the loaf round ready for the right handed people.
I write and operate a mouse with my left hand.
I play cricket ( and golf, if I played, but do not) right-handed.
I can use a hammer equally well with either hand - useful when you get tired.
Archery - I would hold the bow in my right hand and draw with my left.
I use a fly rod in my left hand, but can cast with a double-handed salmon rod either way round.
Also, I wear my watch on my right wrist - it would be too prone to damage on my left.