I do not much like this 'curl $random_url | sh' installation method. I am not going to be running some random script without looking long and hard at it first.
At least in this instance you can read over the commands that will be run beforehand—in fact, Sam actively encourages you to do so.
I'll tell you one difference. It takes me 10 minutes to review the shell based installer. It takes a whole lot longer to inspect an installation package or application source code.
It's a one-page script and a reasonably small, public git repo, from a company that doesn't exactly have a reputation for hacky, unreliable software.