comparing the internal schematic of the TIs OP27 shown in the data sheet with the OP27 of Analog Design one can see that the TIs OP27 Amplifier is depicted with a pure NPN bipolar transistor output stage where the ADs shows a complementary design in its data sheet. This difference would yield a voltage amplification factor higher than 1 (how much ?) and a signal inversion at the output pin with the TIs design..
A higher voltage amplification factor of the output driver stage would yield smaller voltages and voltage stress over the internal frequency compensation MOS-capacitors, which can be favorable.
Sincerely, Christian Daniel