I've used a couple of different lever set ups made by ARMS with good results. They do require a Picatinny type base though.
I have a set of the Leupold OD lever rings on one rifle. They are really nothing more than a Weaver type set up, they just have a "lever" instead of a knurled knob. The lever is threaded and works just like the knob, and not like a true lever type ring/mount. As Doyle said, I wouldnt trust them to just pop them on and off and be on my merry way though. I'd want to confirm zero. With the ARMS and makers like LaRue, I wouldnt have a problem with it. All of those I've owned or used have performed very well in that respect.