I started visanne almost 2 months ago and have had one 'non period' period since then. It was basically extremely minor spotting around days of expected period date with very very little cramping for a couple of days. Overall took like 2-3 painkillers during this time, whereas right prior to visanne I'd had to take 10-15 pain killers over just 2-3 days of periods. So safe to say visanne has worked so far.
Second expected 'periods' coming up in 7-10 days, so I'm interested to see if last month was just beginner's luck or cramps and spotting will stop completely this time. Will update here later!