The idea of developing color paper in black and white chemicals is an intriguing one. I haven't tried it, but it would answer the need for a panchromatic paper to print color negatives in black and white. From the above posts, it sounds like you may have to tweak the developer a bit to get the desired outcome. Adjusting the amounts of bromide and hydroquinone might help with the greenish problem. I have also heard rumors that color paper does not have enough silver (or at least enough in the right form) to produce a good black and white image. A somewhat more vigorous developer may help. It looks like some experiments are needed to see if good quality is possible by this route.
As for printing black and white negatives on color paper, regardless of processing, you have to remember that color paper has high contrast - roughly grade 4.
The greenish tint is from when you make a print of a B&W negative on colour paper, because it does not have the orange mask the colour balance is off. Hence you will get a print with the opposite colour cast.
If you are home printing then get some B&W paper and do it properly.
If you want to save money, do what I did as a poor student in the 1970's.
Instead of buying a 25 sheet package of 8x10, a 25 sheet package of 5x7 and a 25 sheet package of 4x5 in several different grades and finishes. I would buy a 100 sheet package of 8x10 variable contrast, Under safe light I would cut an 8x10 in half, yielding 2 5x8 sheets, then I would trim off the excess one inch, the extra strip stayed in the paper safe. When you wanted an exposure, just take the extra strip put it across the image and do a test exposure and process, saved money on having to print and process a full print for the test exposures.
To get 4x5 sheets I would cut a 5x8 sheet in half, to get 2 4x5 sheets. I often ended up cutting 5 8 x 10 sheets in half, leaving me 10 5x8 sheets, and cut half of those to give me 10 4x5 sheets. It had the advantage that I almost never ran out of 8x10 paper, when I got down to 4 or 5 sheets left, I would buy another 100 sheet package. When I start printing again, I'll probably do the same thing, once I get going.
Another place to save money is to always use the same paper, developer and procedure, this way you learn fairly quickly how to tweak it for your own use, you do enough and you can get to the point of looking at a negative and guessing pretty close on an exposure.