I've got another link buried somewhere that states that the 'toggler' laid prone and the ability to bail out was limited. I would image that applied to the field mod Droop Snoots, not the pics that you posted....but I could be wrong....
That may well be the truth for one of them, but I have a ref that says they were bombardiers, not Toggliers (they were in the B-17s, B-24s, or whatever bombers they were "pathfinding" for.. ) ... They were also rather cozy in the nose, with the ability to bail out and they had all the "comforts" of thepilot od a single-seat fighter..
As the war progressed, there were fewer and fewer bombardiers (as well as gunners) in the 8th AF, as the pathfinders or the lead ships had "real" bombardiers that targeted the primary, and then when he dropped, the rest of the formaton would "Toggle on the Leader"... School-trained bombardiers were going to the PTO in droves by late-1944 for B-29s, and "Toggliers" and "Bombagators" were dropping the bombs...
Regarding the heater, it was said that heater was excellent for the bombardier, but for the pilot, nothing had changed... The P-38 had a lousy cockpit heater, and pilots froze their azzes off at high-alt in the ETO..
Not a problem in the PTO though, hence you hear a lot about P-38s there, including the fact that the USA's Ace-of-Aces, *** Bong, flew a P-38, as did the top-two and three pilots behind him (actually Bong flew several, as he wore-out two of them, at least, and was given a new one after his return from the States) and also, my dad's group had P-38s before they transitioned to P-51s and he too, said "the heater in the Lightning was a miserable POS and the only thing it kept warm was itself", lol..
The relief tube would freeze up after one use too.. Plus, I can't imagine getting "Mr. Happy" to get past the underwear, heated underwear, flightsuit, and a parachute harness & lad-belts to use the tube, or even a bottle of some sort... Dad said he used a thermos-bottle for that "mission" after the relief tube froze...
I'm gettin' off-track here, so I'll leave it at that, and just say that anyone with questions they can't find answers to, gimme a shout.. I may already have what you're looking for, and will gladly help y'all out in that department..