Great Jester!
Sometimes it happens the same to me... for example it happened back in 1996, when I heard more carefully 'Dance of December's Souls' from KatatoniA: I said to myself 'Wild, you, crazy grrrl, what were you think about one or two years before, when you got the record?'.
And the answer was that the sound was too slow, gloomy and one year after I was
at their gig in Rome!!!
Comin' back to Greyswan however, I liked immediately one song from their demo and a couple of years later I got a copy of their debut album and loved it immediately, after the first listen. Then I found 'Thought-tormented Minds' @ 5 euro only. It's a must for me.
I also have an old promo of 2001, which contains a couple of songs which haven't been included in the album - unless one was included with a different title... Unfortunately, I've never found the demo so far.
Worn... do you have the demo anywhere?
I hope to find it someday through tape-trading.