I used a kevlar jacket myself in UN-service in Lebanon in the eighties and wouldn't mind making a "Tank-Impact-Jacket". Those racing guys live and breathe crucial weight saving, while my gravel-dirt-touring regime can easily live with a few extra grammes.
Besides, that colored Kevlar looks "da shit" and should do a decent job protecting those expensive polymer tanks. I'll go for that solution, so where do I order here in Scandinavia? Hmmm...this can be an interesting farkle-rich KTM-winter