This is an interesting topic. I played hockey my whole life and took up tennis in my late 30's. I shot lefty on the ice so as a right handed player I naturally went out there with a 2 HBH. After a year of lessons with a coach that played a 2 HBH, my backhand was mediorce at best. I switched pros and on the first day of practice, the pro noticed that I retunred serves with one hand , exclusively. He picked up on my natural inclination & it was a 1 HBH and within a month I was hitting it naturally, and now 12 years later it is my best groundstroke by far. I had a coach that was perceptive and found something that worked for me more naturally. I can't even hit a 2HBH now. It feels stiff & limiting. My point is that pro's should monitor their pupils and teach them what is the most natural for them.
"Get busy living, or get busy dying
BB Melbourne/ Dunlop 4D 200 Tour