Mate,
I'd recommend getting them anyway. To begin with, it's easy to discard the knife, stick etc if you don't want to practice that portion of the material. Secondly, and this is something you seriously need to consider, it still behooves you to learn how to use a knife and stick to put you in a better position to work against them. As a bodyguard I learnt to make poisons and IEDs etc. Not because I need to make them but, as a body guard, I need to know how they work so I know how best to thwart them.
Just because you're not going to carry doesn't mean the people you're training to defend against won't be...and chances are they will.
hope that helps
N