Flawed - poor design & engineering! - Crimson Trace Laser Grip for Sig Sauer P220

From having read all the product reviews, I was quite disappointed to learn, as I was in the process of installing the grips, which was not a streamlined off & back-on task, that to change-out depleted batteries for fresh ones, you have take-off, switch-out the batteries, and then reinstall the grips... one would think that with the design team available that Crimson Trace could design, engineer and produce grips with an exterior-access battery pocket that would negate having to remove the grips to change-out the batteries and which would reliably function in the field! I sent them back and would not recommend them.