guys - I can answer this as a real life user... I had a 7100g and the innopocket case...

reception IS reduced when in the case. I can put my 7100g in the case and watch the sig meter drop 1 or 2 bars. take it out, and watch it jump up again. every time.

I love themetal cases though, and since I carry my BB in my pocket, I can sacrifice a little signal for the added protection.

Now I just wish Inno would create a 8700 case!!!