Yeah,

I've never used a pedal in 2T mode, but I'm sure it'll act only as an initial contactor switch in 2T mode. You'll undoubtedly have to keep the pedal slightly depressed for whatever number of seconds to keep the arc on though.

Or you could use the finger contact switch in the same way on 2T.

I mean, that's actually the only way I used to use my off-brand, DC-only TIG unit, as it didn't come with the optional foot pedal, and I never bought one, as running TIG beads on DC without a pedal is not much trouble at all. Of course, there was no down-slope, though.

So, switch to 2T mode, set the panel at a fitting number of amps, then "hit it and get it", for a few seconds.