Kirk makes an L-Bracket for the FTZ. It works. I have used the FTZ bracket both horizontally and vertically.
You can have an L-Bracket attached to the camera at the same time. Depending on vertical/horizontal orientation for the desired shooting on a tripod, you may need to adjust the FTZ bracket position which is not a big deal.
You can have an L-Bracket attached to the camera at the same time. Depending on vertical/horizontal orientation for the desired shooting on a tripod, you may need to adjust the FTZ bracket position which is not a big deal.