The Victorinox Electrician Swiss Army knife is designed for electricians and others working with electrical wiring. It's also a good general purpose knife.

Electrician Original-- red scales, no reamer or bottle opener, adds phillips screwdriver (retired)
Electrician Plus-- Adds wood saw
Pioneer-- replaces electrician's blade with can opener, adds key ring
Pioneer Apprentice-- no bottle opener or reamer
Pioneer Rancher-- replaces electrician's blade with pruning blade