On steam, there is a partial controller support shown. I don't know what to make of it.
I'm playing Wasteland 3 at the moment, also says partial controller support but the only thing you needed KB+M for was writing your name in the char creation bit....so it'll prob be a similar situation (considering DOS and DOS2 are so, so good on controller with PC).
My nitpick is the people who jump on PC players who prefer controller....I've been a PC gamer since 1984 when dad brought home our first computer, I feel i've earnt the right to kick back on my couch with a controller instead on hunch at my desk occasionally haha.
