The Grande Date is an XGT,but it's bigger only amongst reversos.Its dimensions are 49mm*26mm.
It is relatively small next to normal modern watches.
The Squadra is indeed BIG,something like the Cartier Santos 100.
Grande Date isn't big,definitely not HUGE
I'm sincerely sorry,but i never heard about the 29,5mm horizontal dimension
All the watch shops i viewed inside Germany detail the 46*29 size as a 46*29,2/29,3mm,
considering JUST the case of this beautiful timepiece.