I was just wondering, why you did not wait for the SRO. It looks like you installed the RMR just recently.
I had the RMR already. The SRO uses the same foot print luckily so a future change would be easy. There “should” be just enough clearance with the ejection port on the VP9 to clear the added .4 inches that the SRO overhangs. If not you’d have to mill further back and remove the rear sight dovetail.