I have a Venom on one of my P-01's and like the set up, using the vertical 'goal post' markings on the Venom as my rear BUIS with a tall green FO front. CZC did a precision job on the milling and mounting with their interchangeable plates. CGW also offers something similar and they also do excellent work. Although I like the Venom, I could switch to a different optic if something better comes down the pike.
Here's an image of the RMS on my other P-01 done by Primary. The RMS sits low enough the stock sights lower 1/3 co-witness. However, because the RMS has limited elevation adjustment, I had to add a 1 deg Delrin shim to get enough forward tilt to get it to zero at 10 yards SD range. The RMS or RMSc are rather flimsy compared to the Venom, DPPro, RMR or SIG Romeo 1 red dots I have on other pistols. JMO YMMV