Well, you perhaps get into different considerations for the member. An individual, by order of the House, could be summoned to appear at the bar. With respect to a member, I understand the tradition is that a member is called upon to rise in his place.
It did happen once that a member was called upon to stand behind the bar, but I believe that in hindsight it was thought to have been inappropriate. I think that generally members are called upon to rise in their place, and the Speaker will then speak on behalf of the House to the member.