A study of help-desks has uncovered the unstartling fact that bosses — managers, supervisors and other members of the pointy-haired cohort — account for a disproportionate volume of tech-support calls.
It's also worth noting that board level users are far more likely to to acquire expensive mobile computing toys without having any real mission-critical need for them, and hence the motivation to master them properly; which is what the field force is likely to do.