I am not a Bosnia-Herzegovinan nymphing specialist, but I have owned a specialized rod for such activity. I also own a 10' 5wt rod designed for chuckin-and/or-duckin' Pacific steelheading and a bastardized 11'3" 6wt "switch" rod.
I plan on owning, and fishing, the 10' 5wt for a long time. Its a TFO Teeny signature series, and it is awesome. You could, if so motivated, fish it like the comp weenies with the whole straight line thing, and I've been known to do so. However, because of its design it also excels at lobbing heavy flies, sinking lines, sinking lines AND heavy flies, whole casts of wets and even dry flies when required. It is truly a jack of all trades. It is also a master of none. Its too heavy to hold at arm's length hours at end. Too long to often do "proper" casting. Too long to offer much pinpoint precision and a dozen other shortcomings.
The 10' 3wt Greys Streamflex I owned, on the other hand, was bought to fuel my love of long rods for regular fishins, and my love of too-light-for-practical use. I used this will full intention of all sorts of fishins, to augment the aforementioned TFO. It was terrible. It was not designed to do much of anything precision, unless its lob a hunk of lead in the form of a "Czech Nymph" 10' upstream so you could dredge pockets. It was a beast to cast normally, lacked all form of target precision, and generally annoyed the hell out of me. After a few rounds of use, it went onto someone else's collection. From what I'm lead to understand, he loves it in its intended tight light nymphing duties.
The switch rod I bought because frankly it looked cool. However, the mystique has failed to catch me. I imagine if I were properly instructed in its use, and had a line that matched, it might be better, however, as it exists its just long, heavy, and poorly actioned. When my 10' TFO busted on me, I attempted to spend an afternoon fishing it like a massive Europeen nymph rod, which was hopelessly stupid. It is not made to do that, period.
So, do I have a point? Sure do! Speciality rods are just that, special. They work well for their purpose, but once you try to repurpose them you've got a mess on your hands. Yes, you can cross purpose and adjust, but you'll be compromised, crippled and likely unhappy. I'm sure there are many rods that can perform jack-of-all-trades duty not unlike my TFO, but there's going to be compromises. The default choice of 8'6" or 9' 4wt or 5wt isn't just because they fall into the middle of a traditional 1-10 scale, but because they were made to fall into the middle of that scale by purpose.
You can cast a switch rod with one hand, but you're going to give yourself tennis elbow doing it. Unless you've got a major desire to whip out double handed spey casts, or two handed overhead, don't bother and just buy a quality single handed rod. Same if you aspire to be a tight line streamside Hoover (Oreck, Dyson, et al)... Then you buy a rod built to do just that, and try not to think about what happens if the water erupts around your dredgin' stick in a fury of mayflies and opportunist risers.