In my quest for a rimfire alternative, I picked up a levermatic in 256. Overall, I did not like it and resold it. Here are my thoughts:
The rifle was HEAVY. I believe it was almost 7.5 lbs. My custom browning 1895 lever gun weighs less than that.
The spring pressure was HEAVY, there is no way you're going to shuck that without dropping your grip off the stock to gather the leverage required to cycle the rifle. So no, it isn't any faster than any standard 90 degree lever throw.
The bottom metal isn't metal, it's brittle plastic! Old 1960-70's plastic. The plastic had hairline cracks, especially where the action screws were torqued. Bouncing around on my dog sled with Alaskan Malamutes that find it fun to put me glancing off ah tree, that brittle plastic is a no-go. Considerable work by a gunsmith would be necessary, to duplicate that piece into real metal.
The magazine only hold 3 rounds. I can think of many situations where I've snowshoed into a covey of ptarmigan, grouse, or a family of snowshoe hare, where 3 rounds wouldn't cut it.
Looks like ADfields model 92/ 256 win mag is the only rifle that will fit what I'm looking for.