Practise Habit
I think here is the answer, the reason why I am asking that question is that, with the correct Hinge action that we know off, we can put a bit more manipulation to control the shot. I find that, the old school people would prefer to use different club to chip with, as they say Higher loft, higher risk. I think as long as we are not using a three iron to pitch, that will be reasonable enough.
Obviously, using different club is good, but again, we have to practise with different club too at the green, in order to gain the confident, particularly under pressure.
I always force myself to use less loft club to chip, particularly in the situation of less fairway and more green shot. But I always chip past the hole when I am using longer clubs.
I think that is related to our practise habit too, if we are so use to just the one club to practise on the green i.e. Sand Iron. Then all the feel and confident will be on that JUST THE ONE CLUB.