For going directly into fastboot I use "Quick Reboot" by phongit.Unfortunately, it didn't . I couldn't even get it to start on fast boot, which was both embarrassing and annoying. I spent the better part of the day scouring the internet for methods and tools to do so but to no avail. All that fruitless search somewhat soured my otherwise perfectly good Friday.
I think it comes down to my set being one of the less common and less support variants. Oh well, into the drawer it goes.
Just tested again and working perfectly well.
Root needed of course.