Man, I like your reasoning regarding glow motors. I have a powerful leccy as well but I still prefer glow.

Just watch out when you want to start the engine with an electric starter. If fuel leaked into the inverted motor you are going to get hydraulic lock. Should you use the starter you might bend something, normally the conrod. Always first flip the prop over by hand (of course without connecting the glow plug), if it turns over then only connect the glow plug and use the starter.

Should the prop lock, it means you have fuel in the inverted cylinder. Remove the glow plug and let the fuel drain out. Replace the glow plug, tighten it and try again.