Does anyone have this sight? I need a new sight and my local pro shop has these on order and recommends it. I've read great comments about Vipers on this and other forums, but this seems to be a very new model. It's in their catalog but not on their website. I can't seem to find any for sale on the web, although Cabela's has it in their product information section. I'm looking for comments from someone who might have one. Thanks.