Same here.

1) Leatherman wave in my EDC, pocket or belt.
2) Leatherman Squirt S2 in the EDC pouch, it stays in my work backpack or goes with my BOB.
3) Leatherman Squirt P4 in the PSK. Say the Wave falls off my belt or out of my pocket the little squirt in the PSK is a backup.
4) Buck 110 in the BOB.
5) Buck Travelmate in the BOB.
6) Buck folding saw in the BOB.
7) Buck camp ax on the INCH
8) Leatherman New Wave and Squirt EL in the INCH Toolkit.
9) Fixed knife on wish list.

Each one complements the others well, I don't see an easy way to eliminate one.
For example the Wave I can't carry at work so the small pouch with it and my cell phone charger, etc go. When we go out of town the BOB goes and that pouch goes too because it has my cell phone charger, I'm not going to take the S2 out so then its redundant with the Wave that would then be on my belt.