In my family , we have , my Mum , who calls a commercial meatworers knife her camp knife but she usually takes over the cooking duty , so her knife uses are primarily ktchen related , with some general duty cutting , and very little if any woodcraft ( Mums kinda crippled up mostly )
She has either an Excalibur Judge or a little Boker ( both folders ) she carries clipped to her bra strap that do most of the general duty cutting stuff she does .
My wife carries a tiny Rough Rider folder that has 3 or 4 blades , all scalpel sharp and she has a small fixed blade I made her and now a llittle fixed blade that siguy made she has taken a liking to . She does some cooking , and is my offsider when we are fishing , hunting setting up camp ,breaking camp etc , her cutting tasks are mainly opening packets or handcraft stuff if we are having a couple lazy days , I suppose the fixed blade would count as her camp knife since her folder is with her always but the fixed blade she carries only when we are camping .
I have a 4"folder , Okapi or Opinel , a fixed blade I made , and a mercator on my keychain , always , when we go camping , I grab my Valiantco Survival Golock or one of the bigger chopping blades I make from leaf spring ( should be used to make , fractured a thorasic vertabrae , and hammering away at the anvil is looking like a thing of the past for me )
the bigger blade does meat cleaver duty if I go hunting , it does wood chopping and splitting tasks ( I do use public cooking facilities at times and they are easier used if the wood more or less fits the fire ring / fire place ) and is generally worshiped by the kids for just being my knife .. IOW , its big , sharp , will cut anything .
My eldest boy ( 11 yr old ) has a 4" folder and a 2 1/2" folder that are his regular carry , the little one for eating duty the bigger one for everything else .
this trip , he gets a marttiini fixed blade to use , only a 4"job , but tougher than his folder , I guess that will be his camp knife , since its the one he'll carry while we are camping .
I have been ebaying machetes and knives for a few years now , and I noticed that I get comments from buyers about the bigger folders and the smaller machetes ( 14 - 16 inch ) all being good camp knives .
I think that there are a lot of differing opinions on what a camp knife is , depending on who you are , and what you do .
For my money , a camp knife is the knife you take when you go camping , an extra to the knives you carry everyday .