Hi,
I had my Tracheal Shave done by Dr. Burin in July 2009 at PAI in Bangkok.
I believe it has made my voice huskier and I can't go as high as I used to be able to with my voice.
However, it did get rid of the Eve's apple.
I was in Phuket between mid June-July this year, I had some work done with Dr. Kunaporn.
I must say he is a very kind and skilled surgeon, his partner Dr. Rushapol does FFS and body contouring work,
I believe they could perform your tracheal shave without ruining your vocal quality.
Hope this answers your question.