I've seen these before. Wondered why they have that offset on the valve end. Must be because they set them up on orig shaft without any adjusting shims.
Looks like no roller bearings on the shaft either just a brass bush that the orig shaft slides thru.
The YT ones I have come with new shaft and pedastals so you don't re-use any of the original rocker hardware. I'm pretty sure they have needle roller bearings in the rocker where the shaft passes thru too.
Wonder what the Malvern ones cost and whether they can use existing cup and ball pushrods or need ones like mine.? Looks like you just screw an adaptor into the rod end to suit the rod your using.
I don't like anodised rockers either.......I believe it weakens the structure.

Besides.......mine look pretty.