Jabra BT200 Freespeek Bluetooth Headset review9
As I already mentioned, no discomfort or irritation is notices when you wear the headset. By wearing I do not mean to use it for 10-20 minutes and then take it of. By wearing I mean having it on for 5+ hours at a time.
Putting on the headset with one hand is possible but requires extensive training. After having the headset for 5 months now, I still use both hands to put it on. Despite of this, once you have it on, it sits very securely on your ear. Only excessive head shaking could dislocate it.