I have no doubt that it can be customised, and that it works for some people, it's just a shame that it has such a dumb name. Trey's smugmug site is a great example, but his actual site is also a great example of a photography site. I would not send a prospective client to my website that had 'smugmug' in the domain.
Maybe thats just me. If it works for you, then that's great. Just try to to be so smug about it.