I have not seen these mentioned here as of yet. I am very interested in the P226 e2. I have a friend at work who is picking up one this week and I am looking forward to getting to shoot it.
For those who don't know, Sig had reduced the grip and shortened the trigger reach on the e2 models of the P229 and P226. Here is a link to the Sig site that shows the P226 page and also to a .pdf file that really does a good job of showing the difference in the old and the new versions.:
P229 Enhanced Elite