In reply to Cathy:
How about sales of touring bindings? Surely after correcting for people who are replacing gear they already have, you could get an idea of growth? Call dynafit and see how much their sales are growing. The explosion of companies offering touring bindings would also point to growth in the industry. Plum, La Sportiva, Marker, Scott, Salomon, etc... in addition to the traditional players.
Bindings would be better to look at than boots etc.. because you need bindings but some bindings will accept either normal alpine boots or touring boots.
Post edited at 06:08