My CAMCO regulator is 50psi. I have a gage I use regardless whether it's necessary or not, and my home is right at 50psi as well. It's interesting to see the pressures and here's why....
If you have LOW pressure at a CG and are not aware of it, you can beat yourself up trying to find the "problem". On the other hand, I've learned from experience that there ARE problems that can occur. For instance:
Inline Water filter; faucet filter; hose screen. I recently thought I had a problem and found out it was as simple as screwing off the "kitchen" faucet screen in my Scamp
and cleaning it out. Worked perfectly. The gage instantly eliminated a wonder about my incoming water pressure. Once before, I had a particular brand of water filter (that had not been in use long!) stop up and prevent my water flow through the hose! It's the only one I've ran into for that to happen.
RV's are another world!