Getting the caveats out of the way first, if you live in a state that requires some form of locked or inoperable state for your firearm, this is not for you. If you have small children in your house, it may not be a perfect fit, either (but that's really a case-by-case basis, and no "one size fits all" approach covers that).
VersaCarry's VersaHub allows one firearm and two spare magazines to be kept close at hand in the bedroom. The tough polymer construction and unique hexagonal texture keeps the VersaHub sandwiched between your mattress and box spring.
VersaCarry recommends that firearms be stored in Condition 3 (magazine inserted, empty chamber), and that magazines be reduced in capacity by one round to fit in the carrier. For standard capacity double-stack 9 mm handguns, this does not represent a significant decrease in round count (assuming full-size Glock/Beretta/Smith & Wesson/etc., that's 3 rounds out of a total of 51).