Switching between windows network share and RaiDrive (when in/out of the office)

New user to RaiDrive.
We have several Surface’s which browse our NAS using a windows network share.
When outside the office, we use RaiDrive - WebDAV.
Is there a way to use the same drive letter?

Most of the time this actually seems to work.
Computer boots, NAS present, Windows connects the network share. RaiDrive opens, drive letter in use so it does not connect.
Computer boots, NAS not present, RaiDrive automatically starts and connects.

Occasionally RaiDrive sees the network letter still in use, and so it won’t connect until I disconnect the network share.
Just wondering if others try to use the same drive letter successfully?