3.5" drive with FD-501?

[+OLD CS1]

For this CoCo2 I am selling, I found several 3.5" floppy drives which will work with the FD-501 interface. I understand RSDOS only uses these disks as SSDD for 160k of storage and to use the WD1773 controller to its fullest you would need OS9. It looks like there are some 80 track modifications available which would allow for 720k 3.5" drives.

 

All that considered, is there a lot of call in the CoCo world for 3.5" drives? If so then I should go ahead and mount one in this FD-501 case.