Huh? Clearly we have very different experiences then, as I've been using @BIOS for years without any kind of problems at all. That said, if you're using OS X and don't have a dual boot system, you might as well use Q-Flash.
Besides, it's nigh on impossible to "brick" a Gigabyte motherboard thanks to the dual BIOS feature, so "people" are clearly wrong here.
I have to say that I don't understand what the big deal is about upgrading the BIOS/UEFI. It takes less than two minutes to do and unless there's a power cut, or you for some reason forced the wrong BIOS/UEFI to be installed, it's 99.9% impossible to cause any problems with the board. In my lifetime, I've only ever broken one system by flashing the BIOS and that was over 15 years ago and it was an odd Compaq system, so yeah, it's a pretty safe thing to do. Keep in mind that I've worked professional for various computer shops, Siemens-Nixdorf (when they were around) and as an IT journalist doing reviews of motherboards among many other things.