SteamDeck-Clover-dualboot VS CloverThemes

You can, of course. For ease of use though, you I also suggest you configure a boot loader: https://github.com/ryanrudolfoba/SteamDeck-Clover-dualboot

I use Clover for dual-boot (SteamOS 3.5 and Windows 10) - https://github.com/ryanrudolfoba/SteamDeck-Clover-dualboot (release 15.10.2023) And I noticed that SteamOS loads much slower due to Clover - ~30 seconds to even over one minute. Windows 10 starts immediately. If I boot SteamOS directly from UEFI (Vol - + power button), the system starts almost immediately.

git clone https://github.com/ryanrudolfoba/SteamDeck-Clover-dualboot

You may also find useful this project. It's a preconfigured Clover that can automatically reinstall itself after system upgrades. It automatically detects different OS on different drives and some OS are already preconfigured with beautiful icons. Works flawlessly for me, tested with Ventoy USB drive with multiple images and with Tails (Deck is an amazing device for anonymous Internet access!) on SDCard. The only things I adjusted were menu timeout and theme. I'm not sure if it's better or worse compared to refind.

I use SteamDeck-Clover-dualboot to manage a dual boot. Updates to either SteamOS or Windows will often mess with the boot priority, so installing this script on the SteamOS side tends to help. When one OS “takes over,” manually booting into SteamOS fixes it right up.

I've narrowed down the themese to this, I got them from here - https://github.com/CloverHackyColor/CloverThemes