I think they're a good idea.
If I was keeping the KLX i would look at making some too. I haven't ridden where you live Bart so don't know what the terrain is like but down here there are many many sharp Shist like rocks that have gouged my safari tank. Whereas a lot of tanks are kinda rounded at the bottom back in to meet the frame, the safari tanks have big chunky edges wanting to take on the rocks in a fall or slide along the rocks.
Maybe the tanks wouldn't get holed without them but, like some engine bars, they offer protection to the most sticky outy expensive parts of the bike & make the rider a little more reassured.
cheers
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