Our Citabria has the release bowden cable routed up to the top of the fuselage and comes out of the headliner just in front of the switch console and forward to attach to the structural tube at the windscreen/wing root. This places the cable directly above the throttle by about 18 inches at the top of the window.

To release, raise your hand from the throttle to the cable and pull down on the cable. You don't need to look for it or take your eyes off the sky.

We use a Tost release, so no special lever is required to overcome release friction, a simple 5 lb pull will do it.

I have seen some Scouts with a lever mounted up top in an inverted orientation, so you pull down and forward on the lever to actuate.