First off, BitchX is a client, not a server. see http://www.bitchx.org/ for info.
Yeah, it would just be used as an IRC client when I'm at work or something and I'm bored out of mine. Wouldn't be used that much or as a bot. Don't remember if it hogged too many resources though, I've asked a couple people and they say it doesn't take up too much. I guess the only real way is to just get on there and see if it uses a lot of memory or whatever.