Thanks for the feedback.
The more I think about it the more I like 1upUSA.
Danrhiggins, how was the set up on your LR4 with an extension for extra bike.
Any pictures? What color was your rack?
Since most of the time I will have my wife's and my bike I may just order heavy duty double bicycle rack and add 2 extensions later. I can still fit my kids bikes into the trunk.
Dan, have fun with your LC.
The extension worked out great. Not that hard to add/remove. There are 2 bolts that you tighten/loosen with a unique "allen wrench like" tool which also provides a degree of security as you need the tool to remove the rack from the trailer hitch receiver and to install/remove the add ons for extra bikes.
I had the silver/aluminum version as I originally purchased it when we had a white vehicle. Black would have looked better on our bronze LR4. (So with the LC I decided to go back to white so it would match the bike rack.

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Here are some pics. I don't know how well it would work to lower the rack as I have done in a couple of these pics with multiple bikes. You couple probably drop it enough to open the upper part of the tailgate but I'm not sure on the lower tailgate as I have done in these pics.
In these pictures I am using the OEM LR hitch receiver.
I found the 1UP to be very easy for loading and unloading. As you likely have seen, there are two braces/holders/supports/whatchamcallits that raise up and over the front and rear tire. I would release one end and roll the bike out while the other brace remains in place. After my ride I would just lift it up and slip it into that brace and then lock it in with the other one. I used a bike lock extension cable with our bike lock and ran it through the recover ring on the LR4 and then ran that through whatever bike lock I was using.
I also sprayed a bit of lubricant on the handle that releases/locks the angle of the bike rack so that it operated very smoothly. It is a breeze to stow it in the up position when not loaded and to lower it back down to carrying position or to the position you see in the pics. Though when doing what I show in the pictures, you will need to support the weight of the bikes by simple letting the bikes lean against your shoulder as you lower them down.