I’ve run MG1s for about 1.5 years – very good, quite grippy but pins are a little short, very light, bearings still fine (twice a week rides mostly in mud, plus a few weeks in the alps / canada / scotland). Recently ripped out two pins in Canada, but that always happens eventually. As noted the paint comes off in places straight away, and they are quite ‘soft’, but this hasn’t been an issue in practice (and i’m always catching pedals).
Got the thru pin nanos couple of weeks ago (35 quid from read to ride cycles), thinner and grippier than the MG1s, but weigh a fair bit more. Bearings etc seem fine, but far too early to draw a conclusion.