Would make sense to allow Segwit generation also in the offline version.
Minor annoyance -- Offline Armory appears unable to sign transactions from SegWit addresses unless manually put into Expert mode and select C++ signer.
Specifically, from a SegWit UTXO to two SegWit addresses plus an OP_RETURN
That's semi by design, don't want it to be too easy to shoot one's self in the foot yet. Will remove the limitations in the next point release.