Slightly OT here but where has all the fear of sideslipping come from? All the Boeings I have flown are pretty docile up to quite a large slip angle. Indeed, the test pilots themselves are usually keen to demonstrate this to anyone interested.
If you land "wing down" in a 40kt crosswind (I find this the easiest method), you are in a sideslip, the same as you are immediately after liftoff in the same conditions. OK, if you whack in full rudder and aileron in a highly streamlined aircraft there might be trouble ahead but contemporary subsonic wings seem to be more about higher aspect ratio/larger span than excessive sweepback.
Modern engine inlets are quite happy working against some quite radical angles of airflow and turbulence - all part of the certification. If it was that bad, crosswind takeoffs woudn't be allowed!