global kitchen stone

i already have a global stone that i use on my single bevel kitchen knives, is this stone good enough for these razors. going to get a practice razor to work on it anyways, but if the grit is high enough already i may just use it instead of finding a razor specific stone. http://www.cutleryandmore.com/details.asp?SKU=1302
if you only had one stone for maintaining an edge, which would it be.

No, this stone is too course to put an edge on a razor that will shave close and comfortably. If you want to hone your own razors you will want to look into purchasing a Norton 4K/8K and/or a Belgian Yellow Coticule.