No, I'd like to hear what you have to say on this.
Ten or fifteen years ago it was popular to bi-amp large speakers by using a SS amp for the LF and a tube amp for the HF.
In better active designs such as ATC's studio monitors one amp is used for each driver. Meridian also does this.
I'm not suggesting that I will get the same results by bi-amping through a passive x-over, but I do think I will achieve better results than a single amp would give me.