PGC hunter, yes it means doubling up in using the RSF. I'm not complaining on that mode of use. Did it myself.
Here is how I've taken this:
1: An RSF mounted onto a small reflector.
2: Traditional straight-through's give an inverted image. Finally got a gut full of the mental gymnastics needed. Here I suppose the crick in the neck comes in.
My solution was a correct image straight-through made out of a sectioned pair of 7X50 binos. Even made the cross-hairs myself out of a single strand of wire from a telephone cable (0.1mm thick). The mount is just a take on the holder of a newtonian secondary mirror.
The other half of the binos contains the dioptic eyepiece which can be used in making another finder, should I want to,
I made it to replace a 10X40 straight-through finder on my Odyssey. My 'finder' is lighter than what it replaced.
I suppose it is the spirit of ATM: if what surrounds you doesn't fit, make it yourself.