Originally Posted by
Helderberg
The crank was more expensive than the Shimano but it ended up less as I didn't have to change the front D.
Often, you don't have to. The 2.5mm chainline increase is often within the adjustment window of the H-limit bolt. I have an Ultegra derailleur with a GRX crankset, which works fine, and perversely, a GRX front derailleur with a non-GRX crankset. All seem to work interchangeably.
Finding a GRX crankset now is however a challenge.