This is a statement taken from the Sig Sauer Site :
Why were the E2 P226 & P229 pistols discontinued?
The "E2" specific model pistols were a limited production run. The positive feedback we received in response to the ergonomic grips from our customers was so overwhelming that SigSauer, Inc has made them a permanent addition to the basic P226 & P229 line-up.
Pretty cool that you gents have some of the last E2's models around ..