I have to say, I am really disappointed that this issue is still not fully fixed.
I've just tested that multi-device connectivity worked with one iPhone and One Android device connected, when I connected a second android device, the first was no longer able to pass traffic.
Now, perhaps this is an Android bug, but it would take a really long time for me to test that myself.
Can anyone else reproduce this behaviour?
I have to rescind this, it was just that iOS fell back to the non-VPN connection for internet access. An IP Tools based ping to the VPN LAN Gateway address failed as soon as another client connected.