I'm not exactly sure what you mean, the two wooden (with metal screws and so on) vices built into that woodworking bench have holes for rectangular cross section bench dogs as well as bench dog holes in the rest of the bench top.Demographic, do your vices have a pop up tongue to push the workpiece against the bench dog?
That means I can (well when its not leaning against the wall in the spare bedroom anyway) lift a wooden bench dog in the vice as well as one in the bench top and clamp something on the bench top by screwing the vice up a bit. Picture re-posted for clarity.
That bench top originally had four vices on it (came out of a school). Two wooden tail vices* which it still has and two metal woodworking quick release vices.
I've got a couple of quick release metal woodworking vices to fit to it again (a Parkinsons made in Shipley and a Woden made in Wednesbury I think) so it will have its full complement again but I've not got round to it yet.
I do however have a nifty little bench stop made by Marples of Sheffield which I think is the kind of thing you mean, it sits in a shallow mortice and normally lies flat so it doesn't impede the flat bench top surface, when you want to clamp something or hold a bit of wood you want to plane you unscrew it slightly and the toothed part raises up.
Again. I bought it for a quid or so and I've not got round to fitting it to anything yet.
This is a better and more descriptive photo of one.
Now I have to confess a real interest in old Vice's and over the last few years I have pretty much hoovered any pictures of the really good ones off the internet.
Garage journal has an absolutely HUGE thread about vices (or as they call them Vises) with masses of photos.
but be aware that that thread is over 1300 pages long...
One of the more interesting ones I've seen photos of was this one. Its NOT mine, just saw it on Ebay a few years ago and copied the photo to my computer.
*Think they are called Tail vices, not positive.