I smoked a pipe for more than 20 years, starting in college and trying every sort of tobacco I could lay hands on, from the justly-famous “original” Balkan Sobranie to Mixture #79, topped with vanilla and found at grocery counters everywhere. As I got into late middle age I quit. No point in pushing my luck any further.
You can smoke anything you like or want to try, and people do, but your natural taste, or the development of a more sophisticated palate (can I say that on Straight Dope?), tend to direct you to certain blends or types of blends, which then become your standard.
Hence, you can have someone who happily enjoys Wild Cherry Blend from Joe’s Olde London Pipe Shoppe day after day, year after year, until his briar gets a burn-through, but would turn up his nose in distaste at a legacy can of Bohemian Scandal. It isn’t just quality: I rarely smoked straight Virginias, which are regarded as the mark of the true connoisseur, but I settled naturally on a type of good quality English Mixture. I just didn’t like straight Virginias.
Joe Stalin famously had some of the best oriental tobacco in the world either available in Russia itself, from the Black Sea area, or next door countries like Turkey and Greece, yet he had the American ambassador import packets of Edgeworth, an inexpensive American blend, which Stalin loved most.
There used to be a cigar-tobacco blend put out by Balkan Sobranie, I think. It tasted like old Army socks to me (or what Army veteran friends of mine have told me old Army socks taste like), but I find cigars a bit too strong and rarely smoke one. I once found some small cigarettes made with cigar tobacco which I rather liked (I never inhale any tobacco, but enjoyed its flavor and aroma). These disappeared from the market quickly, as do most cigar tobacco blends that escape the established shape and style of a real cigar, however, I’m sure in countries where cigar tobacco is grown you would find many variants of use by the locals.
I seem to recall some pipe tobacco “cigarettes” that were on the market for a time, using a common tobacco blend (half and half?). My guess would be the reason was marketing: a more convenient form of smoking for users of that blend, but perhaps some were also cigarette smokers who wanted to take their favorite pipe blend that way.
In sum, the kinds of variants you describe seem to have a certain novelty or niche sales but lack staying power–at least that’s as far as I know: someone else might know of an exception.
In my opinion, you lose something of the refined enjoyment of pipe and cigar smoking by going outside their established forms. There is a reason we have good briar pipes, with sophisticated blends in them produced by skillful blenders like G.L. Pease, and good cigars rated variously by those “in the know.” There is, if you desire it, an acquired taste, descriptive terms, strong opinions, and a culture of the palate (sorry, but it’s descriptive) at work in pipe tobacco and cigar smoking, somewhat like coffee drinking.
I can’t find a “real” Ethiopian or Costa Rican coffee anymore, not like I could in the 1970’s, but that’s another complaint, rather like the nostalgia among pipe smokers for “old” Balkan Sobranie white label.