If you're going to use a more aggressive knobby, I'd seriously recommend a damper.
The more 50/50 tires (like TKC. T63 etc.) are stable at speed on pavement but D908, Scorpion Rally etc. with very tall knobs and open thread pattern can be quite squirmy. To the point of getting unstable.
I'm talking about 75MPH+speeds on pavement.
I wouldn't run an aggressive tire without a damper.
Obviously the damper is nice also on loose / rocky offroad surface.
"It is not when or how you die but how and if you truly were ever alive!" Dr. Jerri Nielsen FitzGerald