I don´t like skinny women. I prefer something to both look at and hold. Same thing with cameras.
A mirrorless camera, maybe with an LCD viewer on the back, hooked to my 600 with an extender ... Little less of a problem with an EVF, but still the size imbalance will be a problem.
Then you can add a grip, to make it more holdable and then ... you have the size of a SLR.
But you don´t have the issue of the flopping mirror ... But I have been using SLRs for close to 40 years and never ones have a mirror failed me, so can´t say that worries me much.
But I hate dust on my sensor and, unless there is something I totally miss, that must be a major issue with mirrorless bodies when changing lenses.