Bootsplash setup with LUKS password prompt

I'm running manjaro with full disk encryption. I want to have "themed" boot experience and so I installed bootsplash. Unfortunately it doesn't theme the initial disk password prompt. Is it possible to do this with bootsplash or do I have switch to plymouth instead? Secondary question: What's the effective difference between plymouth and bootsplash? On Debian based systems I always use plymouth, but the arch wiki says it's been superseded by bootsplash. The only thing I found is that it's supposed to slow the boot process down less.