I finally threw out the last Nabal I had in my fridge that I bought from Brad a year ago. It was crazy how long the scions held in the fridge; green and plump for months. I felt like I could have still grafted with some reasonable expectation of success last summer.
My luck, I bought 3 each of Nabal, Sharwil and Reed and it was 2 Nabal grafts that ended up holding and are going strong today. I had one Reed that seemed like a for sure take on a tree, then we hit a summer drought and that tree gave up the branch almost over night; one day it was pushing growth and the next it was shriveled and popped right off the trunk.