Yup. Two drives mount.
I was successful by reformatting both drives (I named them Home & Home2 - an old WD my book 1TB and an ancient Iomega 1TB, both USB2.0, both formatted NTFS).
Enabled ftp & Samba in the Advanced section.
Rebooted router, fired up drive 1 and plugged it in during the downtime of the reboot.
Almond+ automounts drive during the bootup. Win10 now sees the Almond plus as a network item, with my drive listed under that.
Repeated same process, plugging in the WD Mybook during the downtime of rebooting the router.
Adding a powered hub into the mix was not successful. Granted I only have a 2.0 hub to play with, but the Almond+ did not want to deal with it. So I replugged everything back to the working configuration I have now with the two drives on the go.
Documention on the process needs to be better or updated. Ftp, samba screen differs from the screen shot on the wiki. If reboots are in fact required (I simply assumed they would be), that should probably be in the process. And the USB ports need identification.
Other than that all good.