I mentioned that I played mono LPs with stereo cartridges for decades with no thought to this issue. So, I certainly never said that such a practice is "too noisy". I did say that now that I am cognizant of these issues and use a mono switch where I have one, there is a very obvious improvement in signal to surface noise ratio and in addition in other areas of reproduction. Mono LPs that I heretofore have avoided due to what I thought were noisy surfaces sound much much better even in feaux mono (using a mono switch).
Sorry. I am sure you know all this stuff, and I see that you are way ahead of me in already owning a Premium Be Mono. That's the one I want.