First off, not dated. Is one of the finest firearms ever made.
The E2 grips were just one of several factory grips Sig featured over the years. Those with smaller hands tend to find E2s appealing due to their slimmer dimensions. Enjoy your new P226. Take good care of her and she will you.
You've got a great gun. The E2 is for small hands but converting to regular grips (and the after market as well) is pretty straight forward. If you mean "dated" as in classic, stood the test of time and battle, then yes. If you mean "dated" as in not the new hotness that comes and goes like the wind, then also yes. Congrats on a wise choice!
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