Heyo dudes and dudettes!
I'm a huge fan of solo topping (it's the only thing I'd do if I could help it but sometimes you gotta do other things.. sadly), however I really dislike jungling. Looking at Skarner's kit he seems to have really nice lane sustain, and yeah he's a bit aoe heavy but ofcourse you don't use them when surrounded by 23508235 creeps if you don't want to push. I read a few people who play him a lot say his mana isn't a huge issue (plus you shouldn't be spamming skills anyway when solo top) and a philo stone fixes any mana problems he might have.
Be open minded and please tell me what you think: is he any way viable solo top? Doesn't have to be a top tier pick (if he was he'd see a lot more play) but even on par with something like Nasus would be enough