... Hey Nissey, not really recommended but can be done,,,, if you really really have too.
Apart from some safety issues, the performance of the kites will change because of the Y or V height or distances as mentioned above.
Basically, low V bar like the Cabs cause the high Y kites like North to spread out or fly wider than intended by the designer so this causes the kite to perform different or not really as intended by the designer. Some like it, and others don't.
Rebels and Vegas will not like it one bit, but other models will be ok, such as Dice, Neo, Dyno, Juice to name a few. These kites have the bridle thing going on so can do it.
I experemented with different bars on different kites a while ago, high Y, low Y/V and always found the original bar designed worked best!
Not sure which kite you have but I think its easier to stick the excess depower rope loop onto velcro as mentioned above or just poke the end loop between the two bits of chicken loop rope just above the cleat. So long as you don't poke too much through, its all good and easy to grab if needed. Just grab the black loop thingy in just enough to hold it in position and its all good.
Good luck,
Robbie