ISO storage for Windows and VMware

Trying to eliminate two locations for storing ISO files.  We have an "ISO" folder on a LUN that's VMFS for some VMs.  We also have a folder on a CIFS share so that our Windows admins can access them for installation or burning physical disks.

The ISO images on the LUN are only OS installers and VMware tools.

The ISO images on the CIFS share are the above, plus applications, utilities, boot/diagnostic, etc.

If I could get these from the same location, I could reclaim a little bit of space, and make it easier to organize.

Also, storage efficiency is at the volume level.  So, my CIFS is distinct from my VMFS.

Option 1: qtree + Shares
qtree off the volume used for the VMFS LUN.  This shows up as a "folder" when I go to make a share.

Option 2: Shares + manually enter folder name
I see that a previous admin just shared a subfolder by typing a forward slash / and a folder name off the root of a volume.  I can't get this to work.  I get a red rectangle around the path if I type it in manually.