Knives that I actually carry? Hmm.
Heaviest?
Spyderco GB at 5.50oz. However, like many of my knives, it has a titanium clip from MXG which sheds a little weight. It is also getting bocote scales and a lockbar cutout so that will affect weight as well.
ZT 0095 is a close second at 5..30oz, but again, probably less with the Ti clip.
Lightest:
Brian Tighe and Friends Twist Tighe OTF small: 1.66oz. This OTF is so light despite a 2.75" blade its almost like not carrying anything at all.
Civivi Mckenna is a close second at 1.75oz.
I like lightweight knives. Most of my heavier knives I've had for 3+ years.
I'm guessing I'm probably on average at the 3.5 oz mark, give or take. Maybe this weekend I'll bring the mail scale home from work and weigh everything.