Yes I'm one of the 3 players who use channeling.
as of about Hotfix 24.4.4 or so, channeling turns off while swapping between ranged weapons and melee, I get that people were unhappy it stayed on and drained energy if they (auto)blocked with it on. For me, the 2.99... Melee release version was perfect, I turn channeling on, and no matter what ranged weapons I used, it remained on.
But now I have to turn it on every single time I switch to my melee weapon, which defeats the purpose of being able to fast switch weapons 3.0 style.
There is an easy fix for this, a toggle in settings: "Channeling On While Weapon Switching"
Have it off (by default) and swapping to your ranged weapons turns off channeling.
Have it on, and once you have turned channeling on, it remains on even if you use ranged fire between melee attacks.