Multiple servers in gnus-select-method?

[Johnny <yggdrasil@gmx.co.uk>]

When I first set up gnus a few months ago I thought I would use it
primarily for mail and g**gled someone who recommended to in that case
use imap as gnus-select-method. Of course, I have by now stuffed a plethora
of different methods in gnus-secondary-select-methods.

So, now I realise it would be great to also read my gmail in gnus and
 want to add another imap server. How should I go about this? Is it
possible to add another server to gnus-select-method? Or should I put an
nntp as gnus-select-method and use imap as
gnus-secondary-select-methods?

Now I use:
(setq gnus-select-method
      '(nnimap "gmx"
	       (nnimap-address "imap.gmx.com") 
	       (nnimap-server-port 993)
	       (nnimap-stream ssl)))

And would like to add something like:
(setq gnus-select-method
      '(nnimap "gmail"
	       (nnimap-address "imap.gmail.com") 
	       (nnimap-server-port 993)
	       (nnimap-stream ssl)))

Could this be done and if so, how? (the manual always uses a single
server as example, so maybe this is a bad idea?)

Thanks,
-- 
Johnny