That is the problem with adopting drills into areas totally
unsuitable for them.
Whether a person looks smart is not dependent on a rigid formula.
Yes, there are some constants, but where smart 4s are concerned,
adopting a rigid formula can lead to disastrious and frankly stupid
results.
Many lanky and thin singaporeans look absolutely ridiculous when
they use the 4 finger rule. They look scruffy and untidy because
the sleeves are rolled to high up their arms. Sure, it might look
good if you have 'normal' well proportioned arms. But like I said,
many recruits look positively shabby.
I still remember my sispec instructor laughing at the lot of us the
first day we turned up at sispec. 4 finger rule? Not at the expense
of smartness and comfort you don't.
BMT instructors... 
