Quote Originally Posted by Luvin Da Blues
Yes, but with the added circuitry all things would be equal for the two fuses in question.
Employing a SPDT switch would have only one connection in common, the wiper, depending if you want to short the Tuning Fuse, or replace with a normal fuse, which could require more connedctions. When we're talking about the changes brought about by a cryogenically-treated 1" (or smaller) piece of wire in a casing, the electrical changes are very small.

Since it's perceived this makes a difference, it can also be perceived that contact resistance for each pole can be a factor, or using less than identical lengths of wire for the switch. Solder connections can be a factor. I've run into many a high-resistance cold-solder joints over the years. If more than one wire is used, what about crosstalk between them or the contacts and the EMI produced by each wire. This is why I can't believe a change so small can make a noticeable difference. Still too many variables.