Its very personal, some can't stand it, some wouldn't do anything else. The thing is, most neck knives are not so good for bushcraft, skeleton handles and all that. However you can pull a "Cody" and neck carry a larger knife, like a mora.
the only way to know is to try, as you might have a certain tolerance, or it might only work under certain conditions for you.
Try to figure out when each system might be most advantageous to you, and give it a go. you can try with knives you have, or look into some cheap stuff to trial. The way it works for me is that the activity determines the knife, then the knife determines the carry. Most neck knives work well for pocket carry as well, so that is always a second option. For me its always the first choice. I have very few times that neck carry works as well as I thought it would. Its not magic, and has a heap of disadvantages, but to some they don't matter.