Soperbrew and I talked of this yesterday in chat. I mentioned that I was told by Denny that wheat gelitinizes at mash temps, so a cereal mash is not required. He googgled it and found the temp required is in the low 140's, IIRC-easily within any mash schedule.
I read somewhere that the gelitinization is what makes the starches water soluble, but I do not remember where I saw this.
To convert the starches however, a diastatic grain bill must be used, as in it containing 2 row or similar base grain.