I have no skimmer, no mechanical filtration, and no chemical filtration at all. All I have is biological and some macro algeas to soak up the nitrates. I enjoy it A LOT. No rinsing to do, just some occasional prunning. My powerheads push most of excess food and other crap into my overflow, and my mini-hermits eat whatever drops into the my refugium. I also have mysis shrimp multiplying at a decent rate in the caulerpa, and the caulerpa grows at an astounding rate.
There is more then one way to skin a cat, and so far I like this method the most. As soon as the money gets saved up, I am gutting the filtration in my solana and doing a hob fuge with a ton of LR in the back where the skimmer used to be.
As far as difficulty, I spend less time on my saltwater tanks then I have on my freshwater. But my freshwater tanks were stocked with cichlids, which are messy and somewhat destructive.