If you follow the instructions here
You can use the same windows toolchain to compile, build and upload under windows. Tried both on maple and on maple_mini.
You can clone libmaple using git bash window, but you must compile using a windows cmd window and not the git bash window.
The only caveat is the upload - you must you perpetual bootloader mode and manually enter the dfu-util command to get it running.
Another small tip - if you dont have make installed - sees that typing "cs-make" works much faster.
if there is any interest I might be able to contribute a walkthrough.