Oktas8 its an excepted method. And taught by some not by others
The excepting bit by instructors can vary though if they are doing checks. You get some quite strong opinions on the pro's and cons depending on high or low wing etc.
Personally I used to teach both depending on what worked for the student. There are pro and con's for both. But to be honest as long as the student could get the plane to a point which they could get in. I really couldn't care which method they used.
MJ