I am still in doubt if the instrument is meant to be a tenor or a travel guitar.
A tenor guitar has the first four strings of a 'normal' guitar, tuned in (high to low pitch) E-B-G-C. Musically it is used as a rhythm guitar playing 4 notes harmony chords. Barre grips are much more easier then on a full 6 string guitar. Changing chords can be done in a higher speed, so rising and descednding chords progressions are within reach without over streching, cramps and muting with the thumb,
The Harley Benton is, compared with other manufacturers very nice prized. The neck is 2/3 wide of a normal neck, so the strings are in the same distance from each other. The tuners are rather simple and cheap, allthough the instrument stays very well in tune. The finishing is okay. The sound is much better than expected.
The size is very small compared with a 6 string guitar. therefor It;s not an instrument for the front man of the band ;-) The audiance will think it is a oversized ukelele.
The instrument has a learning curve, even if one plays guitar already. The best start is to play the songs one knows.
When it doesn't work? Tuning the C to D and you still have a traveller :-)