I wasn't done with unexpected nosedives on my strong side (riding regular) until I had clocked >400 miles total. They were all my fault, even though each time I wanted to initially believe the board had malfunctioned. With experience I learned better.
Now, knock-on-wood, it's been >800 miles since my last nosedive. Heed the warnings of others and take it serious, keep it 15mph max, but you don't need to ride paranoid and like squeeze the fun out of it. It's a very safe commuter machine if you pay attention and wear proper pads, signal properly in traffic, etc.