if you can get a JDM NSX , i say go for it, heck go for a Type R . it doesnt take long to get used to. second week i was here , i was already driving our squadron's truck. to add to things, it was a 4sp on the column. i had never driven a rhd car, much less a manual car with the shifter on the column and i had no problems driving it for the first time. the hardest part was using the turn signals. i would instead turn on the wipers as the controls are switched also. then i would drive a lhd chevy van and that would confuse me again. the ignition switches are still to the right of the steering wheel in JDM cars though.
as far as not being practical for a daily driver, i have to disagree with you CDube. I've driven cars, trucks, vans, and buses here in Japan, both LHD and RHD and i have no problems getting around town with them. even with a bus.