All my Viscount experience was with Channel Airways before 1970 and involved hops from Southend to Southern France Perpignan as I recall, and Palma Majorca. I did not fly on them again until a flight back to LBA with BM which should have been DC9 but ended up with Viscount due to tech issue which would have been early 80,s.
Always struck me as being a gentleman,s A/C in that it did everything in an unhurried way - a view from this SLF anyway. Did some cockpit visits and I do agree about switch gear being scattered, it was like looking at an explosion in a boiled sweet shop as I recall. Also I once witnessed one do 5nr failed approaches on a still night at Perpignan before finally landing. Departing passengers looked very Green and one was sick on tarmac - you remember these details when you are 7 !
Cheers
Mr Mac