That's true Sedayne, some/many in the C. of E. don't like "Jerusalem" being called a hymn; and, yes, Volgadon, Blake definitely did not write it as a hymn...it does mention "the Holy Lamb of God", mind.
And, yes again, Volgadon, I do enjoy singing The Water is Wide, and those 2 shanties.
To Steve: I tend to agree with most of your first paragraph, but not the second.