Key Maps off while using chat

I have a G11 and I do basically the same as Ualaa.

M1 toggles Key Maps
M2 toggles Mouse Repeat
M3 toggles Key Repeat

All 3 include a light on/off action so it's easy to tell what's active.

I love being able to use my M1-3, MR and G1-G18 keys as separate, unique keys instead of having to configure them in the Logitech profiler as key combos. Great feature.

I haven't messed around with this, but have noticed the Alt, Shift and Ctrl keys are checkable options for G-Key hotkeys.

So while this may or may not work, you might be able to go with Alt G1, Ctrl G2, etc.

Yep, Alt Shift and Ctrl do indeed work with the G and M keys (and any other button from any device that works with IS :) ).

On my G15 for example, the G16 key is follow and Ctrl+G16 is stop following (turn left or right). G18 is my dps spam button, so I've also used Alt+G18 to add in extra DPS from my healer. For my shamans I used to have it so G9 was something like a searing totem or Ctrl+G9 for magma instead.

I like to add modifiers if I need a less common use of essentially the same thing or its opposite.