Yeah, that's the type of slam I was thinking about. That or coming down face-first on a rail or box. I wouldn't mind the face mask breaking (better it than me), I just wouldn't want it splintering into sharp shards that would embed themselves in my face. I think ABS tends not to behave that way.
Are you mail-order only? I'm in Canada, so ordering from the US is a PITA, especially if the seller tries to use UPS.