Actually there are a number of "humpless" Spydies. Off the cuff, I think of the Lum Chinese, the Centofantes C25 and C50, the Viele, and the Goddards have minimal humps to accommodate their hole. And the Native which shows signs of descending from the Renegade/Blackhawk design.
I have an earlier Renegade and like it. The newer one has a steel liner as I understand where mine does not. I also have an almite handled Blackhawk.