I have models with rubber gromets & without going through metal holes, but the hoses fit snug! Never a problem yet with rupture.
Apart from UV light, vibration greatest factor to premature failure no matter how properly secured.. not something to worry about on a model I wouldn't think.
5yrs eh? and 5 more?.. don't let the media find that out or you'll be the new poster boy for "too much time on hands".
