Yes of course you could adapt one line to function "similar" to the other if confronted with an unexpected situation but you certainly would not loop on a scandi head to fish a high, nearly blown dirty river. Likely you would choose a skagit and sink tip. Same if you were wanting to skate a dry fly, a scandi would be a better choice. I'm sure there will be opinions either way.
Actually, I would choose a Scandi.
For high, dirty water here at home, I usually choose a either my 14ft 8/9 or my 15ft 9/10 rod.
I pair either of those rods with an aggressive, full sink Scandi, like a Guideline DDC, a SGS Scandoid, SGS Skandit or a Guideline PT or 3D. The latter two, I usually chop about 3ft off the tip and re-loop for maximum payload. All portions of the line is sinking, bellies are usually intermediate or S2, tips range in the higher densities.
The aggressive scandi heads can easily deliver anything that I carry in my wallets. Personally, I have cast a 35mm Waddington shank dressed with arctic fox tail on fore and aft in the "round" style, so that's a bulky fly. I can cast this set-up all day long and not get tired.