We're planning to use e-punch for all CPs at the
MNOC adventure race on July 9. We tried a limited amount of e-punching at the transition areas in last year's race. Despite the coarse splits, all the teams were fascinated by the ability to immediately compare splits. I think they'll take to it like fish to water.
Also, with the number of beginner teams that generally participate in our races, we need to do punch card checking. E-punch will make that a lot easier as well... basically the same reason it helps for O-meets.