If it has 2 connection points for the 5th it is less likely to cause damage to the kite.
Not that I have ever ripped a kite after using the 5th for something like 4 years.
Appart from 2 weeks ago when I attached a suicide leash in over 20 knots and
that was just a high impact

If someone with experience can show you how the 5th works go for it. You will feel in way more control when you know how and when to use it.