I saw this on a YouTube channel, and I was intrigued enough to buy one ($28 on Amazon), pronounced "a beet" apparently. It's made by a Chinese company (Shanghai Youshang Stationery Co., Ltd), and consists of a demonstrator plastic pen that bears some similarity to a Lamy Vista, and an ink bottle. The gimmick is that you can only fill the pen by removing the pen cap and the bottle's cap, and inserting the back of the pen into the open top of the ink bottle. There is a needle in the ink bottle, and a corresponding hole in the back of the pen. You hold down the big orange collar of the ink bottle for three seconds, then release it, and the ink is sucked up into the pen (I only got a partial fill when I tried it, and you're not supposed to do it more than once per fill).
That part works fine, completely clean and no mess if you follow their instructions. Maybe if it catches on they will offer more than one type of pen.
But I have questions, that did not occur to me until I actually had the pen in hand. How do I empty the ink? How do I clean out the pen? It seems to be possible to put different ink into the ink bottle (but there is a separate filler doodad that you have to buy, and that doesn't seem to be available yet), so how do I clean the residual ink so that the new color writes the way it is supposed to?
There was no Q&A section in the Amazon (U.S.) listing, and I could not find anything in the English language online about this company, such as where to write to them. I will keep looking. This is quite a new product, maybe a month since it first appeared on YouTube.