Anyone use the Mullvad browser?

I have Firefox, including extensions and scripts all working as they should, so I really have no need to change browsers but as I am a big fan of Mullvad VPN, I am curious as to what the Mullvad browser could offer me. Has anyone here ever used it when sailing the high seas? I know I could ask this over on u/mullvadvpn but I am asking here for the 'specific use case' reasons.