i have always been a left-handed drafting spinner, even though i am a right-handed person. but i have been diagnosed with CTS and will need to have the surgery to alleviate my problems on the left and so i have taught myself to draft and spin with my right hand. i am quite proud of myself actually because in my head i guess i convinced myself that switching hands was impossible.
Congratulations! Nothing is impossible, and being a bit more ambidextrous makes live just so much easier... (as when filling the tank with the right hand while noting down the date, mileage, fuel price and quantity with the left - over the past 8 years my writing has become a lot more legible).