1. No, a Pincer Pawn can capture up to three pieces in different orthogonal
directions, but it cannot capture two pieces in a row.
2. Yes, a Withdrawer can capture by withdrawing diagonally, a Long Leaper
by jumping diagonally, an Immobilizer paralyzes diagonally and though a
Coordinator captures in an orthogonal way, it may be through a diagonal
move (say King on d1, Coordinator moving from h1 to b6 captures enemy
pieces at b1 and d6).