unless you bring the vacuum bags/pump and go thru the entire process each time of course
I've never used a vacuum pack bag before, but can't you just use your kite pump to "vacuum" the bag?
My kite pump does not fit nicely over the vacbag valve. They work best with a vacuum cleaner. Its all good when you leave and have the vacuum cleaner at home but when returning you sometimes cannot find a vacuum cleaner, eg zanzibar. I think I managed with the kite pump in the end but its was not as effective and you need two people for the operation.
I never really thought of the vacuuming process damaging the kite as I was overcome by the excitement of turning a 12m kite into the size of a 6m kite. I've used the vac bags on four separate trips so far each time taking two kites in their own bags and had no problems. Vac bags are very useful but I think I'm going to avoid over vacuuming in future in case of possible damage.