Will this device:

…remove the drive-side crank for the spindle of a pair of RaceFace Deus cranks?

(Red ones, not that it matters.) RaceFace say it wants an ISIS puller but I can't find the specific Park Tool they suggest, or indeed anything which admits to being an ISIS standard puller. My square taper puller certainly doesn't want to do the job.

I bought one of these http://www.chainreactioncycles.com/Models.aspx?ModelID=36379
to go with my standard square taper puller.
Never used it though cos the threads got shagged and I had to saw the crank off. You can have the adapter if it'll be of use.

I use a small socket piece and a normal crank pull. Never fails.