What's the upside/downside of buying directly vs steam?

I am considering saving up and buying the game, however I don't have a ton of time on my hand. I am wondering what the upsides and downsides of buying directly would be. Obviously the upfront price is only a penny difference, and buying directly definitely means Strange Loop Games gets paid more when you pay the same, but is there any incentive to buying directly?

I would like to buy directly in case I like the game, however I'm a little scared I won't like it like I think I will and won't be able to refund the game. If I can't refund but there is an incentive to buying directly other than the devs being paid more, I would absolutely buy directly.