I am very torn about this. On my phone, I currently have two authenticator apps: one for FFXIV and another for all of my other accounts that support 2FA.

On the one hand, it's nice to have just one app.

On the other hand, I love, love, love how I never have to wait with SE's app. I type slowly, and if I open the other app and it's about to reset, I have to wait, and that happens often enough that it becomes annoying to use.

Plus, I have enough room on my phone, so it's not like I can't afford to have two apps, but it is visually nicer to me with less app.