Stuart, you posted that as a reply to me but I was asking a different question… 
I was wondering if there’s any issue (probably not, but just checking…) using a GRX front mech (FD) with a regular offset crankset, where its small chainring would be 2.5mm inboard vs. a GRX crank’s small chainring - essentially whether there’s sufficient inboard adjustability in the GRX FD to run smoothly in the lowest gear combo of a regular crankset.