No doubt this will be true.  I have seen a couple electric ARFs that looked like good glow cantidates - the ICON A-5 flying boat for example.

One issue is that the firewall is too far forward with electric models.  Easy to add the spacers or add a plywood box to convert a real model to electric, but more difficult to rear-set a glow engine and muffler if the design has the forward firewall.