Holy Cow, these wheels are big and bright. I finally got around to mounting the 70mm Orangatang 4Presidents that I got last week. I put them on a Nickel with Independent 109s. I didn't use any risers, expecting that I would add them later, but so far I don't think I am going to. I took it out for a little while at night and then some more the next day. There was a little footbite here and there, but nothing too bad.
I had 60mm wheels on the Nickel before, so this is a decent jump in size. The differences mild but noticeable. Seems a little taller, but because the 4presidents are pretty wide it doesn't feel tippy at all. Also, it seems to carry speed a little better. That probably has some to do with the size, but also that they are a little harder than the wheels they replaced. That makes them a little louder but my roads are pretty smooth so not too much.
I don't think wheels this big are going to become my standard, mostly because the roads and sidewalks around here are pretty nice. That said, I would absolutely go to 70mm wheels on a Nickel if you have a problem with rough streets, although I would probably get them a little softer than these.