This is one of the other things I kept noticing about all the trekking bar setups I've seen pics of; there's nothing sticking out that just looks like it's waiting to cause a serious injury in an otherwise minor wipeout. With the chipseal and debris along the last mile of my commute, (the turnoff to the landfill is about a quarter mile before work, and the scrapyard is about a quarter mile past it, so all the junk people want to get rid of comes through that stretch, mostly poorly secured on a flatbed or tossed into a cattle trailer) that's always a concern.