The UHK is moderately annoying if you frequently need to do chorded combinations that involve the escape key, function keys, or cursor control keys. Since you

The UHK is moderately annoying if you frequently need to do chorded combinations that involve the escape key, function keys, or cursor control keys. Since you have to access those keys through an modifier key, the chord you need to hit requires adding that key. You can work around it to some extent with macros and key remapping but it still makes me wish I had a third hand. I like the UHK in terms of build quality and functionality but it would be much, much better if it were a 75% layout instead of a 60% layout.