Up until recently, most of our guys only called "touch" handcheck fouls (when there was no obvious advantage gained) when the handchecks were multiple, persistent, and very obvious, often first giving a warning, "Hands off".
Now (since 2014-15), with the exemption of a single, momentary "hot stove" touch with one hand, our interpreter, and our assigner want these (two hands, extended arm bar, placing and keeping a hand, contacting more than once with the same hand or alternating hands) called (when there was no obvious advantage gained), and we seldom issue warnings, usually the first shot across the bow is a foul called.
That being said, some our local guys, especially some grizzled veterans, still have differing philosophies.
As usual, when in Rome ...