It is an awesome piece. By far my favorite I own.
The shirt looks great untucked ....although have you changed the sankara 'grenade lobbing hand' the other one? It just looks so much cooler, like he's reaching for his whip and about to open a can of whoop-ass !
But Indy's Shirt is never untucked in TOD And tucked in is so much more GQ
I just like tucked because it is more film accurate.
Of course if you prefer untucked, thats cool, because it looks good that way too.