The cabin house side isn't right for a jackline because the tether would put the crewman too far down in the water (it's too far outboard). And in the illustration, probably too far aft for self-recovery. We don't want to drag behind the boat.
A jackline needs to be near the centerline of the boat, and is only used for going forward. Work around the cockpit area is better served by a strongpoint in the cockpit for the attachment of the tether there.
I believe the jackline rig should never suspend the wearer below chest level at the gunwale. A six-foot tether doubled to three feet, combined with the stretch of the jackline, provides that. From such a position, if tossed overboard, the victim finds himself with the dual wires of the lifelines in his face, and can pull or swing himself up on deck again. This presumes being thrown overboard over the top of the lifelines, which is likely. Some folks install netting to prevent being washed under the lifelines, but the odds are against that I figure.
The centerline-jackline rule is widely accepted as necessary. The rest of it is thinking it through for oneself. It is not defensible to go forward in heavy air without a jackline system. Sticking your crew with the job of heading back to pick you up, and their ruined lives if they don't succeed, is untenable.
Note: I don't have a dodger, but I do keep two tethers installed. One is for the cockpit, one is for the jacklines. To go forward, change tethers before leaving the cockpit. Maybe a version of that that would work to get around the interruption of the jackline by the dodger. And of course none of it is necessary on a daysail in 10 knots.