You'd have to define "dabble"
I used to have an instructor who was always going on about it, but could not reproduce any of the effects he claimed could be performed with chi. At that point I decided that while I could feel something others called chi, training to manipulate it was a waste of time. If it can be used to augment physical martial skills, it would require proper body structure and triangulation because energy must follow the laws of physics like everything else. Since these things I train anyway, focusing on the chi side of it would be a waste of training focus. If you know anything about Wing Chun, then you know complete efficency is a major goal so focusing on something that might or might not help you fighting is not within that goal.