The Ram grips tightly and i recommend it.
I am getting the zerolemon 9000mah extended battery and invested in the bike mount made for it. The attachment to the bike is solid and attaches quickly and easily. The phone part has a generous cutout for the camera. The phone part seems like it might be a little flimsy, but it grips the phone very securely.
What i want to especially mention is that it fits the extended battery, but more importantly, it also fits the Lg G3 with stock battery when in the Otterbox Defender case.
I like both mounts and would trust either on a road bicycle/motorcycle. Off road, hard to say yet, but i think the extended battery mount might be the more secure.