You don't have to if you twist the pouch.
really? anything from a .177 b.b. to an inch sized ball of lead? same set up?
i naturally shoot with a slight twist. sometimes the pouch can be too thick or heavy also.
just pay attention to the feel of the weight in the pouch as its moving.
its just about finding a style that suits you and what you primarily shoot with all around.
( so many variables ! )