When I said I'd go for convection, I assume that one can use it either way. I don't have one. I have a vintage Wolf range with a 36" single gas oven and an electric wall oven with a microwave on top. When that dies, I will buy an electric convection oven with a micro or combo micro on top. Wolf (now owned by Sub Zero) makes a convection gas oven with an infrared broiler.
I can't find any pics of the older (30 years) stoves, but mine is based on this chassis:
It's just the 3 foot portion on the right and it did come from the FD here in Long Beach. I refurbished it to black as it was gray. I had the 5 footer in a previous home, but had to leave it behind. Sad day.