It’s not bad, but yeah, takes maybe an extra 45 seconds to slap on the cameras (my rear one drops into a frame that’s already on the bike/trailer, other one slides into a helmet mount) — you can set them so they start shooting video just by hitting the shutter, no need to even power them on.

Mine just write to the onboard storage (microSDs), but I have the option of streaming live if I want (although my commute’s usually not that interesting). Battery life is good enough that I can do my full commute (about 20 minutes one way and 15-20 back) without needing to recharge at work.