Borrow, rent or buy a cheap RF camera and see how it feels. For an SLR shooter, RF can/will be a big step aside as it's quite different and not necessarily better or worse (though usually one of them applies in the end).
My guess is that your shutter speed is in the double digits, or even slower, so the way you hold and balance the camera at slow speeds is very important. I predominantly shoot SLR and have never learned how to hold RF properly, at least not well enough to feel comfortable shooting at slow speeds. There just isn't enough room for both of my hands there, and I've learned to use the size and heft of SLR when steadying my hands. I am getting better at it, but apparently it doesn't always (or to everyone) come naturally, or quickly.
Just something to keep in mind, in case you haven't shot with RF recently (or at all).