I have installed the Givi bags with the Givi rack. It needs the grab rail to be in place. The whole thing installs in about 1/2 hour with very few tools and no cutting required so it is completely reversable. The result is neat, teh bags are as close as the body work allows. The racks do not quick release like the SW MOTECH. The result is a snug fitting setup with no play or flex. I've been using Givi for 20 years and am always happy with their products.
I was aware of the SW MOTECH option but I have little need to remove the racks. I also feel that more joints provides more opportunity for flex and free play. Also no cutting is required. I think with the SW MOTECH kit some cutting is required underneath the rear bodywork, right beside the fender. I watched a twistedthrottle.com video of the install. Not too hard but I don't want to cut it.
I bought the Australian model (no grab rail). I want to take my kids for a spin occasionally so I bought the grab rail kit. It installs in about 5 minutes and is necessary for the Givi kit.
When money permits I will be getting a Givi top box mount custom made. I don't like the one from twisted throttle as the whole assembly cantilevers from the rear of the bike which is a recipe for trouble. I did this with a previous bike and the combination of load, pillion and vibrations snapped the sub frame clean off the bike. I had a professional frame engineer repair and correctly brace the kit. I then had him install a custom mount on my 98 R1 and it still works today. He does a very neat and discrete install.
I took photos of the install although it is pretty straight forward. I've been off the spanners for about 15 years so it can't be that hard.
HTH
Russty
08 sapphire