WhisperingEye18, I see you are in Cleveburg. Not sure where you are or if you are familiar with these two stores, but certainly worth a visit for you.
Down in Ashland, just off I-71, is the main store for
Fin, Feather and Fur. Last I was there, I noticed a pretty sizeable SIG display, they may be a SIG authorized distributor. The FF&F in Middleburg Heights is nothing like this, the trip to Ashland is well worth it, three floors of goodness.
The store you really have to see is
Top Gun Supply in Chesterland. About 10 miles east of I-271 on Mayfield Road, this store has one of the most stunning firearms displays I have ever seen and they ARE a SIG authorized dealer. Whenever I visit this store, it feels like I've walked into a Lamborghini dealership, absolutely incredible. Their retail hours are a bit unusual, you will want to check to make certain they are open prior to making the trip.
Top Gun Supply will probably have the E2 grips you are looking for in stock, you can kill two birds with one stone - get your socks knocked off by an incredible display and get your grips. They also have some beautiful old SIG's on display, not for sale, mind you, but you can get some incredible drool factor going! LOL!