My 2 pence worth is that I would not be dancing now if I had started on2 as it took me 1 year+ (!) to hear the one beat, let alone finding the 6.
I would mainly dance on2 as I was in an on2 heavy area, although on1 if the song had the 3,2 clave.
Now I’m not too bothered and will happily dance on either timing ;)
I agree about some moves feeling better on2 and I had some moves which work a little better on1.
Ramble over...