You guys realise how fast punches come right? I dont think crossing over your whole body to reach something on the other side of your body is efficient. Kind of confused that Ip man would even recommend that.
Agreed - and 'efficiency' is the key.
AS far as if Ip Man recommended that or not matters little. The concepts/principles of the system will show us what is most efficient, not some story about who said what regarding a 'technique' over 50 years ago.