Rokform Windshield Mount?

I am considering buying a Rokform suction mount (Suction Cup Magnetic Phone Holder - MagSafe® Compatible) to replace my Steelie Nite Ize. Has anyone tried one? How's it working for you?

I'm buying a Rokform phone case instead of an Otterbox this time for my new phone, but I'm skeptical about the reviews online. Doesn't seem like none of 'em are truckers, and there's only one relevant 4-star review that complains about the mount loosening up from driving down lots of bumpy dirt roads.