We usually do them the same day and add some dill to the mix, was the first step to cooking dinner. I was using the term "quickle" before I heard it on Chopped. Grandma used a fork to score down the sides on her fresh ones. I usually peel grocery store cucumbers.
Grandma also used to pickle sweet onions that way. Not the green sprouts but like rings of Walla Walla sweets. I developed the taste for them but no one else in the family is a fan. They don't appreciate sour red cabbage either.
You can take some of the left over liquid and thin out some yogurt or sour cream, either as a separate Tzatziki sauce or to serve mixed together.