Icicles uses M-p and M-n for `icicle-previous-history-element` and `icicle-next-history-element`. Since those are perfect examples of non-ergonomic keys, ergoemacs changes them to F11 and F12. This is consistent with changes to other packages.

In icicles you can insert an element from your minibuffer history, thus limiting your candidates only to the ones in your minibuffer history. In `ergoemacs-mode` This can be done by M-F11 or M-F12.

In the vanila icicles `icicle-previous-candidate-per-mode` and `icicles-next-candidate-per-mode` are cycled using C-p and C-n. This is not ergonomic, so in ergoemacs it was moved to M-i and M-k.

Whenever icicles binds a standard key like C-p or C-n, or C-s, ergoemacs-mode looks up the change and runs the mode-based changed key.

In icicles you can easily see all available keys using key completion. The default key for this is S-TAB for buffers and M-S-TAB for the minibuffer. Due to M-TAB being used by default by some window managers including Windows, ESC-S-TAB is also available by default. Since ESC works like C-g in ergoemacs, ESC-S-TAB binding would not work with it.

When icicles and ergoemacs-mode is enabled, pressing f1 in the key sequence will start the key completion.

The most basic ergoemacs theme component for icicles looks like this. Since most of the icicles keybindings are connected to minibufer, you should put your keybindings within "when `icicle-minibuffer-setup-hook`" form.

(ergoemacs-component ergoemacs-icicles-user ()
  "Ergoemacs-mode theme component for icicles"
  (when icicle-minibuffer-setup-hook
    (define-key minibuffer-local-map (kbd "M-p") 'icicle-insert-history-element)))
(ergoemacs-require 'ergoemacs-icicles-user)

Icicles allows you to match only those candidates that have particular text within them. A rather complex example is available here.