I can see the advantages of both. I relocated my electric pump behind the driver’s bulkhead because it was the easiest and neatest option for me,
The pump is out of the way close to the tank and the existing fuel line on the bulkhead. There’s no exhaust pipe nearby on my single pipe system.
The HRW wire was easily relocated to power the pump via a dashboard switch.
I didn’t have to change or reroute anything under the bonnet, which worked for me since there’s a tubular manifold on each side of the engine bay.
If the pump stops working out on the road then it’s not as easy to check as one in the engine bay. Apart from a couple of basic tools, I delegated my toolbox to the AA man many years ago.
I agree with Hasbeen about degrading rubber fuel pipe. I had some expensive braided stainless steel fuel pipe weep close to the carburettor. As well as a faint smell of petrol, the vapours evaporating off the surface made it cold to the touch otherwise it looked sound.