How to specify the default completion style in vertico-multiform-commands?

[ijqq]

I want to use the flat style by default, but specify a few commands which should use the default vertical completion style instead. In the snippet shown below, using vertical gives an error that the symbol definition is void, while other values such as buffer, grid, and reverse all work.

(use-package vertico
  :ensure t
  :init
  (vertico-mode)
  (vertico-multiform-mode)
  :config
  (setq vertico-multiform-commands
	'((switch-to-buffer vertical)
	  (t flat))))

[minad]

It should work if you simply specify nothing, i.e., (switch-to-buffer), since vertical is the default.

[ijqq]

That works. Thank you very much.