Climbing gear isn't super common but certainly crampons and ice axes. Longs peak has a route where people are normally roped and placing ice screws but more due to exposure then actual climbing. Pyramid peak is another that usually has climbing and there are quite a few others though the routes are the less traveled ones. It's also not that uncommon for lines to require a repel to get into. Obviously this is still a very small subset of the general skiing population and even a small subset of back country skiers but there is definitely an audience for the gear in Colorado.