Would be okay, as one would have to pull out the keyboard anyway to do anything useful in the X Terminal. The shortcut should be so that it's possible to activate with just two thumbs (and not so that the right thumb has to reach all over the keyboard from the right to reach the "X"). Right now, the Ctrl+Shift+X shortcut (that already works) is nice, but it's impossible to do without using three fingers. Maybe something like Ctrl+Bluekey+L (as in command "L"ine) could work. But of course, it depends on the hardware keyboard layout of the devices..

I would use the keyboard shortcut most of the time, but right now, the physical keyboard layout combined with the combination does not really make it that easy (maybe even on purpose?).