I don't know anything about laminitis really and I am just avoiding doing my work and musing on this.
Laminitis is popping up everywhere at the moment, I have never known a year like it. My friends horse had x-rays and it showed pedal bone rotation on all 4 feet. Now I don't know if this has aided the treatment plan or not. Maybe the treatment would have been the same without the x-rays? Are the x-rays a 'nice to know' or a 'need to know' if that makes sense.
I would be asking your trimmer what their plan of action would be in different scenarios. If the pedal bone has severe rotation, does this mean he would trim in a different way compared to if there was minimal rotation? If the answer is yes the treatment would be different, I would go going for the x-rays.
If the vet thought that x-rays were necessary, I would have thought that they would have advised you to have this done when he has his check up with them?