It's obviously not for everyone and doesn't seem to be doing much for me. I think I'll stick to the nebulised ipratropium which does help.
I read somewhere (probably on here), that some paramedics, as part of their training did a cross-country run, then ran up and down flights of stairs and then had to breathe through a straw. That way they could really understand what many of us have to live with every day.
If this kind of 'ground level' training could be extended to include consultants and others in the respiratory field it could be of benefit us all.