I am left-handed and INTJ. I do everything left-handed, except for using scissors. The only reason I use right-handed scissors is because I am a perfectionist and the left-handed scissors they gave us in grade school were horrible, so I had to 'buck the system'. I don't know how all of this is wired in my brain, but I do find it interesting.
I haven't officially been diagnosed as an aspie, but I feel certain that I am due to the results of every test I have found thus far.
Some of the results....
Aspie score: 176/200
NT score: 35/200
AQ: 38
Highly Sensitive: 26 out of 27
Extreme Systemizer: EQ 29, SQ-R 118
Autistic/BAP: 116 aloof, 120 rigid, 110 pragmatic
Alexithymia: 133/185 (High...but I need to look into this more, because I don't remember what it really means.)
Like I said before, I find all of this to be very interesting...even if I can't explain it!