Did you ask them WHY you wouldn't be happy with it in a couple years? Maybe, it's harder to apply or something strange like that and they just don't wanna deal with it. Other than that, can't imagine why they'd say what they did.
2013 Jayco Eagle 328 RLTS
2013 F350 6.7L 4x4 CCLB
W/Air Lift air bags (front & rear)
Me, Momma and Charles (RIP buddy)
And introducing Sofie!! ;)