The Shape Note version for Come O Thou Traveler is Vernon. Note the repeat of the 2nd part. It's also at the Cyberhymnal. Boston Camerata did a recording of it as well.

Our church choir has also done it to a different tune, but I don't recall what it is right now. It is not Candler. Candler is L.M.D. (Long Meter, double) It would work well with an 8 line hymn or 2 verses of a 4 line hymn treated as 1. Come O... is 6 lines of 8 so the words are repeated to match the music. I don't know how common a practice that is. Combining 2 verses into 1 is not unusual.