This was, as Sean noted, likely the only real logistical option for the 2nd-host course...
They will play nothing very much like each other at all, except for what will likely be a similarity in length. The Home Course is a solid track, although I don't think anyone would call it inspiring (or inspired, for that matter). The pace of play there for locals is often glacial, so they'll have a good idea of how long it will take to move 156 players (or whatever) around THC in a specified amount of time.
THC could be tricked up, with tall roughs and tucked pins, just like just about anyplace else, but I'm guessing the emphasis will be more utilitarian---get 'em around, get the scores in and get 'em back over to Chambers quickly for the typical play-off for the final few match-play spots.
Although there are a few blind spots on THC (the 7th tee and the blind drive over the hill with the pond right is a combo I do not like, for example), I suspect it will not be a big headache for the Am's playing in it.
Logistically and politically (WSGA "home" course, etc.) this was the de facto choice..