Some years ago, an anonymous straight guy on Reddit talked in detail about doing a scene with Sean Cody. The prevailing thought among LPSG super sleuths is that it was Walker and this is the scene he was describing.
I just watched the scene and if Walker is/was straight, he sure seemed to enjoy being fucked. He did a lot of kissing, something straight guys usually won't do and had no objection to having Daniel cum in his ass.