Is it really that hard to carry a brick with you? I mean, for the unique factor it might be nice, but I hardly say it's probably worth the small fortune it would've commanded in the day. The best thing about some external bricks is that they can have really long cords making an unbelievable stretch to a table in the middle of the room. If you don't want the stretch, just shore up the cables with something like one of those cable ties that are adjustable and reusable.

I keep the long cable on my MacBook PSU because it stretches to wherever I need. Considering that not all tables are next to the wall, it comes in way handy when dealing with distance.

It looks like you would need an extension cord to use that in a considerable distance from the wall. Much better just to use a brick. It might be worth more if it attached to an external battery pack and converted from that. A wall plug, not so much...