I'd like to voice my opinion to this issue. As soon as you use a Veeam B&R repo your backup usually will be stored in a (safe) network location. At this moment it's more or less unnecessary to encrypt your backup because you usually configure access restrictions to the network share itself. Of course, alternatively you could add each localy connected backup storage as a backup repo in Veeam B&R and use each one for each (in our case) notebook as it's own Veeam EB backup location but you must agree this sounds very strange.
Anyway, I really would acclaim a direct encryption feature in Veeam EB.