Surprised? Didn't audioguru tell you this?I used the same circuit and changed the P Mosfets to PNP TIP147 Transistors and N Channel Mosfets to NPN TIP142 transistor and the circuits doesnt work in the simulator ...
It's even worse with BJT's, the base voltage is small so the drivers for NPN and PNP really need to be independent.
You're trying to drive $8 worth of transistors; a $5 driver chip is perfectly reasonable. IMHO, don't fight it.