we used the toshiba HD-A1 with gefen to eleven screens a the same time without any problem, so no this is not a problem for any switcher. if the player looses sync, press "enter" and then "play"

Regards Joern
Editor, Watt Magazine, Norway
Gear: JBL Array 1400, Array 880, Klipsch rs62x4, Velodyne DD18+, 861v6, HD621, Cambridge 752BD, Pana 65VT60, JVC DLA X75, SR 2:35:1 152", Prismasonic, PS3, Xbox360