Keep vim always in command line mode with a ":"

Is there a way to make vim stuck in command mode with a : already typed in?

In that way, for instance:

I would type /fooEnter and the cursor would go to the beginning of the next line containing foo.
Next, I would be still on command line mode with a : already typed in for the next command.

Solution

As a last try, I could just initialize vim with -servername=FOO and then code a little script that would read from stdin and send remote-send to FOO whenever it detects(by parsing) a whole command was typed on stdin.

Then I would just use Vim and this other script side by side on different xterms/gnu screens.

EDIT

OK, I will use this one. This way I can even make :a command to enter vim's Insert mode and switch back to command mode when entering a line with a single .. This way I would also have syntax highlight on the fly when inserting text (you know, vim has a very pretty visual display of the text, I'm just too used with ed's interface). When I have so time I'll write this script and link it here.