If you have the GRX 810 crank, you can get a Stages installed and there shoud be clearance. The wider Q-factor and wider splay of the GRX crank allow it to clear wider chainstays with Stages Gen3. Open is similar to 3T Exploro (both Gerard Vroomen), see here:
I have since switched to Felt Breed (3T is in the classifieds, y'all!), with GRX810 crankset, and despite the bump on this chainstay the Stages clears this too:
I have since switched to Felt Breed (3T is in the classifieds, y'all!), with GRX810 crankset, and despite the bump on this chainstay the Stages clears this too: