I have been using the MKIIA live more and more. I have gone to using dirt pedals instead of the lead channel. No issues setting levels between dirt, clean and more dirt. I am using a TC Spark at the end of the pedal board chain for lead boosts. Helps to not bring the gain too high for both dirt and boost to avoid preamp compression, unless that is what you want.
Last night, I used a LovePedal Red Moon Tchula and got awesome sounds. I had to turn down presence and treble since this pedal boosts highs. The Tele had some good harmonics and was “juicy” with the left side on, when the right side was engaged, great grind and sustain.
These amps are so flexible, just not like the multi channel modern Boogies.