I would do it just on principle. What principle is that you may ask? The principal of the boiling frog.
Tubes degrade over time. SS much, much less so. I own Tube and SS equipment; amps and preamps.
Every few months I will switch between SS and Tube for some comparative listening to assure that my tube equipment has not slowly degraded in sound quality.
And in fact I was prompted to buy some new tubes after the most recent switch test...