I switched to trekking bars from risers a few weeks after I got my bike and haven't looked back. Incidentally, I ended up riding almost 40 miles of gravel last weekend and did experience some numbing after the first hour of riding. The different positions do help, but it also depends on what type of bar tape you have. It took me a few tries before I was able to decide on the type of bar tape I ended up having on my bike.