Does anyone have Revolights that could comment on their visibility (how far do they actually project at night)?

I've always wanted some but have always held off because everyone said they took hours to install, plus I just couldn't come to terms with having cables running around my wheels.

Revolights is finally making a newer version (http://igg.me/at/revolights/x/13131312) that's on pre-sale now on Indiegogo. The installation looks simpler and I might finally get some once they start shipping in the summer.