In "normal" life around people I don't care for it. I don't want to draw attention to myself.
If I was in the great outdoors hunting, or in an area where large predators live, I would definitely open carry.
I believe the RMSx is the larger footprint of the standard RMS, i.e. the "full size" optic. I can tell you from personal experience that the RMSc will fit the hellcat and the u-notch irons are fully visible through the lens if needed.
I had the same problem with my hellcat osp. Even sent the slide and optic to Springfield. Turns out it just needed more elbow grease to get the optic on. They're a very tight fit.
Give Hidden Hybrid Holsters a try - you won't be sorry. They have OWB, IWB+OWB, appendix, and small-of-back holsters for every version of the hellcat and pro. I have a few of their holsters for both appendix and IWB+OWB and the build quality makes Crossbreed look pathetic...
They just just make them all optics-ready and if you don't want an optic just don't install one and leave the plate on. Seems like that would lower production cost if they only have to make one pattern.
Not to mention the literally hundreds of tons of materials that have to be mined just to make one battery.
Electric cars don't reduce pollution, they just move the immediately visible part of it to third world countries where the environmental regulations are lax (or nonexistent).
You have to assume the Shield sights will need the zero corrected because you have to remove them from the slide to change the battery. Maybe you'll get lucky and yours will return to zero, but you'll need to verify that.
The Swampfox Sentinel will mount directly on the hellcat, but it blocks about 60-70% of the irons. They're still usable, but I found it much more difficult.