Here's my version of that same vise. I found a 2 foot section of square tubing on a job site some years back. Drilled some holes, welded some nuts on and used some other "dumpster" steel and welded up three of them. I doubt if I have 20 bucks in all three. I placed them at different heights and places around the shop for easy access.
As well, I made a work station thatt allows me to access the knife from all directions. I got tired of having a knife in a vise and only being able to access it as far as the front edge of the bench! (I think I said bad words??) Anyway, this allows easy access for approaching the knife from almost all the way around.
I also got tired of not being able to find the right file! This was made from an overhead light diffuser and keeps the files safe from banging into each other and lets me find the file I want.