yes but
1- you have to format them as 720k at windows
2- use the PC0: devide at storage/dosdrivers
3- be careful about dos naming limitations (8.3) as it will be a fat14 formatted disk.
you can also use these floppies to transfer data between amiga-pc.
edit : doh too late and yeah why didn't I think about formatting 880k in the first place ? anyway but rumor is that they won't be long lasting this way, so don't expect them to be a reliable storage device.