Yeah it is. I have the Signal app installed in Android, but I only use it to initiate the Signal setup. Then use the desktop flatpak in FuriOS as my daily driver. You can change the look of it to be similar to the mobile app and a recent change (like a week ago) has made resizing the contact list easier from a touch screen rather than having to use a mouse the first time.

The Telegram and Matrix channels have been great for people sharing tips like this.