I haven't been following EFnet politics lately but I think its very unlikely that they will adopt vchans even if it is part of the hybrid 7 package. I believe ircd-ratbox (a hybrid fork) removed vchan support entirely. Of course this does not mean that some other network who uses hybrid 7 servers won't enable them. I guess it does not hurt to add in a little popup dialog with the list of virtual channels prompting the user to pick (thats really all that is needed to support vchans..they otherwise work like normal channels). If the server does not indicate that it has vchan support in the 005 numeric then mIRC users wont notice any difference.
vasil_michev: do you know of any networks that have vchans enabled and functioning? I have read about vchans but have not had the opportunity to play with them.
For those who want to read about vchans and how they work go to the
hybrid website 
