It works, but 24' later[1] I'm still confused :-( I don't have strong feelings about either toolkit, but the switch (as opposed to both being available and equal) doesn't make sense to me. Apparently (11:48 onwards) the main driver for this seems to be cross-platform compatibility in general, and with SymbianOS in particular. That's a bit... naive to say the least. Portability is a lot more than skin deep, and there vast differences between the two OSs in basic things like file and network I/O, process control and signalling etc[2].