they look good
they carry lots of stuff too
and you can DIY it, if you feel like it. The only thing in is you'll lose your top speed.
Typically in malaysia, you mount a normal heavy duty Givi rack, then mount normal base plate on the sides. Then use a smaller top box as your side pannier. Apart from being cheaper to replace in a crash, they are a lot bigger than the normal givi side pannier, which will not fit a helmet.
Do retro fit extra mount (usually givi racks don't have bolting at the back end) if you like a more solid rack system. But be wary to limit each box to 3kg only (you can do 5kg on the top box if you have the extra mounting)
p.s. : No idea what I'm saying, get the rack first, then you'll see.