Reworked lenses by jieying (Canon 77mm f/1.0 with m43 mount)

There is a guy named “jieying” that reworks the mount of all kind of lenses so that they can fit on our m43 cameas without the need of any adapter. The advantage is that you don’t need to buy and carry adapters with you, the disadvantage is that you have to pay a bit more for the lens (of course). I was curious to see what he is currently “offering” and here is the list:
Canon 77mm f/1.0 lens (Click here to see it on eBay)
Canon 50mm f/0.95 lens (Click here to see it on eBay)
Kowa 55mm f/1.0 lens (Click here to see it on eBay)
Color-Lanthar 50mm f/2.8 lens (Click here to see it on eBay)
Rodenstock Heligon 50mm f/2.0 lens (Click here to see it on eBay)
Kodak Singet 35 Ektar 44mm f/3.5 lens (Click here to see it on eBay)
Rodenstock Heligon 50mm f/2.0 lens (Click here to see it on eBay)
Schneider Xenon 50mm f/2.0 lens (Click here to see it on eBay)
Kodak Ektar 50mm f/3.5 lens (Click here to see it on eBay)
Schneider Xenon 50mm f/2.0 lens (Click here to see it on eBay)

These are all reworked lenses! Probably the Canon 77mm f/1.0 lens is most intriguing option (at least for me).