If I could only have one or the other, I'd get the lever and a lee classic loader
I have an SKS. I bought it "new" way back when you could get SKS's for $70 with 200 rounds and some cheesy "chinese army" gear.
I can own as many rifles as I can afford so it would be silly to get rid of mine. I'd rather stick it in the safe and give to my son to do with as he wishes one day. I shot it for the first time in 15+ years of ownership a few weeks ago. I had grand visions of a williams firesight up front and tech sights out back...until I shot it. Then I cleaned it, prepared it for storage and back in the safe she goes. I really don't think I'll ever shoot it again unless my son say's "Hey Dad! Let's shoot that SKS." I just don't like it.
If I didn't have a son, I'd sell it. I don't like shooting it. The ergonomics are, well the rifle wasn't designed for humans if you ask me.
A lever gun is very fun, at least for me they are. I'd take one over my SKS any day of the week and twice on Sundays. I wouldn't get one in 44 mag, though. That is, unless I was planning on loading my own ammo.
Even in a SHTF scenario, I'd take a lever action with a scout style scope mount over an SKS any day. But honestly, I think SHTF preparing is kind of silly...even though there's an AR with a size-able ammo stash and an equally large ammo stash for my carry piece. I wouldn't say it's SHTF stuff, but just-in-case-stuff. If I was preparing for SHTF and survival stuff, I'd be more focused and have more money invested in medical supplies and food stores. If I depended on a rifle to feed me post-shtf, I'd grab my dead reliable 22 and stick 1000 rounds in my pocket...at that point I'd worry about food, not clean kills.
Unless that SKS is fun for you to shoot or holds some sort of sentimental value, I'd get a lever gun...they're just more fun. But I'd prefer 30-30 over 44 Mag.