Should work.
Personally, I don't like the slow heat up claptons on an unregulated, which is pretty much how the Dbox60 behaves.
On the other hand, if you pop one in there - 0.4 ohms I think is a pretty good neighborhood for it. I use different attys on mine - sporting simple but dual
coils that net about 0.5 ohms.
And that, by the way, is worth doing - trying a different BF atty than the one it comes with...
If you haven't yet, then you should know - there's far better atties!!