I just saw this new item announced..

Sony RMT-VP1K Wireless Receiver and Remote Commander Kit

am I correct in assuming that if using the Sony A7 with a L-Bracket (apart from the RRS one) that I will still be unable to fire a shot when the camera is in the portrait position?

Is the Sony Play Memories App my only option for this situation? I have found it to be not 100% reliable, so am seeking other options?

Ok, thanks so much for any comments or suggestions in advance