It seems a bit more difficult, but as Greg shows several times in the vid (and the first vid too just with touchdowns) it works !
Although, the term "roll tack" is wrong for both, as they are simply tacks without switching feet, as the word "roll" describes how you roll your body around on the board under the lines when switching feet.
Around 2:05 and forward you will see some tacks from toeside:
http://www.youtube.com/watch?v=euQKcy8RFOM
I am impressed by the 360's he does going downwind instead of upwind - and each half of both type of 360s are similar to a tack without switching feet, so in a downwind 360 you actually do exactly what you ask for too in the last half of it
It all looks "ridiculously" easy ha haaa - we all know it is not, but an art to make it so fluid and easy looking
Hope you get it dialed, let us hear how it works out for you zdunigan ?
PF
PS: Regarding ones strong foot, I find it much better NOT to ride mostly on one side, as you will be lousy on the other side then.
Also, it seems your strong foot is different in hydrofoiling, as usually we use it as our rear foot on old boards, and to some extent in hydrofoiling too, but on foils when carving you can often turn better having your strong foot forward especially when learning turns, as it is the "leading foot" which is used to turn the foil, almost completely opposite to what we were used to