+1 on the givi bars, WELL tested and other than some paint removal, never a worry.
I have the ravetech rock guard, which has taken a number of hits. While I've dented the 3mm aluminum, the impact has been largely absorbed by the rear mounting bracket (to the frame), which acted as a crumple zone. Popped off the plate, hammered it out, good to go. I suspect the SWM mounts to perform similarly.
I've dragged the bike over ledges inadvertently, and unless you're attempting to motocross the V, I think you would be fine with Givi, Ravetech, SW Motech and others - it was more about looks for me. One advantage to SWM not mentioned is their parts all fit together fine whereas mixing brands may result in odd spacer fitment, and resulting additional labor. There are spacers at front and rear mounting points.
I will offer this additional caution on the Givi crash bars - perhaps relevant to the other brands; the left side mount blocks your ability to easily access the front sprocket cover, which can be a pain. In removing the crash bar to get at it, the rear mount is threaded rod and can be tricky to torque properly. That rod is also (in the case of Givi) not very hard so I replaced it with grade 8 equivalent metric rod from McMaster Carr for about $8.
Good luck, the V is a lot of fun off road.....
Ride more, bitch less - secret to good life!