My example was intended to show the answer is "yes"...if you're ok with the sequencing constraint. You only need two scene controllers. Here's a clip switching through 8 amp types (Plexi, Bludojai Clean, JM45, Wrecker Express, Bogfish Brown, SLO100 Clean, Energyball, ODS100 Clean). No gaps.
But when you change reverbs too for each amps ? Most of the time, if I remember well, the reverb add “problems”
I use to have different reverbs type and length for clean rythm and lead and…