I heard that you can't smoke English and Virginias in the same pipe. Is that True? Or should my rotation be the new pipe I got with a cob and exclude the other because its just a bad starter?
Well I smoke Virginias and English blends in the same pipe all the time. I think it depends on the actual English blend(s) and the guy who's doing the puffing. I'm sure some "full" English blends could indeed "ghost" a pipe, which is why some people devote a pipe to those heavier English blends, just as some like to smoke virginias in certain pipes to, allegedly, taste all the subtle nuances that virginia blend can deliver.
My English blends are limited ATM to Dunhill Early Morning Pipe and H&H Black House, neither of which, to my tastes, are full Englishes. I have dozens of virginias in stock and usually smoke those.
My advice? Sure, get a Missouri Meerschaum Corn Cob pipe or two (they're super inexpensive; avoid any cob but MM) and include those in your rotation with your two briars. Let the pipe rest a day between smokes. After letting the pipe cool, clean your pipe religiously and thoroughly after each bowlful. Try your tobacco blends in each of your pipes to see what tastes best in which pipe. Taking notes may be helpful.
Unless you pick a blend that will ghost your pipe, such as a very full English, a blend with Lakeland essence, or certain heavy aromatics, I doubt you need to worry about what you smoke in your pipes.
Welcome to the PM Forums, Louie -- and let us know how you make out!