It had some name like Dragonfly or something like that, but I can't recall 100%
But if they had something working in a common browser, then I think that would basically solve it.
Of course, you could always just buy a laptop or a tablet PC of some kind that's already out there, and more geared towards contractors, and then install the regular DWG True View software. TBH, if I were thinking about a company tool for contractors to use... that'd be the better money spent.
If I -had- an iPad already, and was thinking "Gee, I wonder if I could find a way to..." then yea, that'd be cool. However, if I was starting with nothing... yea... I'd go the laptop route likely.