Well, I bought a gravel bike this year and I am enjoying the heck out of it. The ability to ride many mountain bike trails along with decent speed on the road is wonderful. However, there is a fly in the ointment. There is a short off-road Strava segment nearby that I had been trying to get a top rating on. On my gravel bike, I managed 7th place, not bad for a 72 year old, but I thought maybe I can do better. So, I took out my trusty Look 595 and did that section with it, guess what? Second place. To be honest this is a pretty smooth gravel path, slightly uphill at first. I am also an experienced mountain biker with little fear of unpaved surfaces. If the trail were less smooth my gravel bike would rule, but on smooth gravel my Look 595 road bike is way faster