Using skills should grant you experience. Disarming a tap, for example. This would make it worthwhile. Don't get the name change, though.
Changing "Lockpicks" to devices would open up a lot of possibilities in terms of what you can do with the skill while maintaining suspension of disbelief.
Lockpicks is... well, you pick locks.
Devices means you pick locks, disarm traps, fiddle with machinery, and can craft special objects.
You know... for kids. =)