Orca was too heavy and, ultimately, too slow for me too keep using. Switched to herdr haven't looked back.

Different philosophies. herdr has defined a few core primitives (machine -> space -> tab -> pane -> terminal) and lets you customize all the ui around it. Among all the ADEs I've used this is most reminiscent of emacs.

Orca is a bit heavy in asking you to define projects / worktrees up front. Anything you do, even quick edits starts with a worktree. Projects get their own modal and file browser before you start working. Herdr just lets you cd, mkdir, get going. But it's also worktree aware and organizes them under your repo when you do create them.