.44 Magnum and lever action make a nice combination. They are slim, light, and pack a real punch, comparable to a .30-30. I have a Marlin 1894 (square bolt) and a Winchester (Miroku) 1892. In terms of looks, the Winchester takes the prize. Both shoot and feed well*. The Winchester trigger is what it is, 6#, but there's a drop-in, "Happy Trigger" for the Marlin with a crisp, 3-1/2# pull.
A .44 Magnum will get at least 300 fps more from a 20" barrel (> 16") than from a 6" revolver, and even more from loads a revolver can't safely handle (Ruger Super-Blackhawk excepted).
Lever actions must be operated briskly and firmly, all the way to the end of the stroke. The Marlin can get hung up, requiring partial breakdown to clear. This is easy, by removing the pivot screw for the lever. The Winchester is more reliable, but can stovepipe. If so, it's easy to clear from the top. Breaking down and reassembling a Winchester is difficult, and should be done out of earshot of small children or your spouse.
For cleaning, get a bore guide and clean from the muzzle. Spare yourself the chore of breaking either rifle down.
* The Marlin is a controlled-feed action. The rim of the cartridge should slide smoothly under the extractor. I find it helps to break the action down, and stone the underside of the extractor to break the sharp edge. After that, the action should be extremely smooth, with no tendency to bind halfway into the chamber, and no gouging the case in the receiver. Some people bend the hook of the extractor a little, but I didn't find that necessary.