I’m loving my 43X so far. Will be even better once I can score a couple Shield mags. Having 15 rounds in this small of a package seems like a no brainer.
Just because you have one you like doesn’t make them a popular option. M&Ps sit on here for long periods of time without being cut for a mediocre optic.
I’d take it to the local peeps at MAC Defense in Woodstock and have them cut it. It won’t hurt your resale and you can put a cover plate on it if for some crazy reason the RMR doesn’t suit you.