If you're going with a finder scope go with this one (or similar). The RA prism can be rotated (just the RA prism, not the whole finder scope) to allow convenient eyepiece orientation/viewing despite the orientation of your scope...just like the RA prisms on your SCT or refractor. After all what's the point of an RA finder if the eyepiece isn't pointing the right way half the time..?
https://binocularandtelescope.com.au...-finder-scope/
I have two of them. One for each of my night telescopes.