Channellock no longer seems to make this pattern unless they just forgot about them when they updated their site, but it must have been recent if they were discontinued because you can still find both sizes in stock a number of places.
They're being listed as heavy duty slipjoints, heavy duty combination slipjoints, or heavy duty shear cutting slipjoints, but not being on their site anymore I don't know what Channellock officially called them.
I'll bet those things are great, I will probably snatch myself up a new pair while I can but I don't imagine them being as nice to use.
All the current slipjoints in my arsenal have narrower handles than the older properly marked examples I've got or have handled.
They knew better with just about all their other pliers aside from the slipjoints so I know they haven't completely lost their minds.