This is great! This together GoPro Seatpost mount (http://shpws.me/M0iA) allows me to reclaim the limited seatpost space. And I can easily adjust the angle.
However, there are 2 issues:
1) I needed to file the slot in order to get the Fly6 to slide in. But once the Fly6 was in, I couldn't remove it.
2) Video taken with the Cycliq stock mount is much more stable compared to this mount.
With these 2 minor issues, I still want to use this because I reclaimed valuable seatpost space.