i think the answer is --"sorta"--or 'mostly"
i have seen a frame that could do 40/10mm and 38 super with the same slide too.
the frame is not where most of the conversion is --that is mostly in the slide
i am thinking of building a 40S&W myself --that is i i don't do another 45acp--
these stainless frames are much like a RI frame and look to be OK for the tok conversion to me--