Steven,
Unless you reformat your boot volume, or transfer your boot drive to a new drive, it won't make any difference at all. QRecall primarily identifies volume by their UUID, and unless you migrate to a new partition/drive, your UUID won't change and your volume's name is largely immaterial.
If, in the future, you do reformat or migrate your boot volume so it has a different UUID, QRecall will then try to match the volume in the archive with your boot volume using a combination of the volume's name, the date it was formatted, and its size. So if you replace your startup drive (now named El Capitan), and later want to dig back into your archive (when it was still named Yosemite) and try to restore an item, QRecall
might not be sure where to restore it to. In this case, you'll have to recall the item and manually locate the original item to replace.
That's the worst case scenario.