I use the bottle and can openers a lot, not only for beer and cans. If you go Wenger style you get a great locking screwdriver on the bottle side and a clamshell packaging opener on the can opener side. I think I opened more clamshells than cans with that thing. Also works great for opening boxes and slicing through tape when you don't want to gunk up your knife.
The bottle opener gets used almost every day. Back in my single days I never even had a proper can opener, just used the one on a SAK or Leatherman. Worked just fine.