Not quite sure if this is the right place to mention it but I would assume that most people that want to post on a website or similar would find it quite sketchy if they would have to install and run an extra program.

Especially since you always hear that you shouldn't install random programs because of malware and so on

Just a thought: why don't you just use two different aliases for the Server in your .ssh/config with your two differing ssh keys, that way you can just use two different "hostnames" that have different ssh keys specified

I hopped around in Debian-Land for a while before switching to Manjaro, converting it to Arch later on.

Now I stay with Arch because it just works and doesn't break on me.

nay

You don't have to trust yourself not to write malware by accident, just trust that if it's malware it wouldn't run if you wrote it without realizing