Yes, all 4 of my Escapes were propane only while others have spent the initial $200 option plus replacements. Too easy to mess up.
Both of our trailers, Casita and the Escape, had / have both propane and electric. We use electric every time we stay at a RV site with electric power and have never replaced an electric heater element.
It's not that hard a thing to manage.
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Normal people believe that if it ain't broke, don't fix it.
Engineers believe in fixing it so that it never breaks.