Have you ever used a separate speaker selector unit to audition speakers? Would you?

I'm anticipating a big "bake-off" between speakers competing for my affection. I have a tube amp that requires shut down, short break, between speaker changes. So, I'm thinking of getting a speaker selector box to do this. I don't want to spend a mint, but if the speakers are multi-thousand, it seems that spending a little money to really compare them might be worth it.

I know that such interpositions of wires and hardware degrades the sound. But this would be done to all speakers being compared -- so it would remain a level playing field.

Of course, if it trashes them all, then no comparisons can really be done.

Any thoughts about auditioning speakers at home with a speaker selector box?