Share 'Gravel Bikes for cyclocross'

I wanted to get people's opinions on Gravel Bikes used for Cyclocross.  I've read the opposite happens quite a bit (people using cylcocross bikes for gravel races, with some modifications), but was wondering if anyone has used a gravel specific bike to race cylcocross.   This question came up while I was looking at the Salsa Warbird series (beautiful bikes btw) and noticed they are using some of…