It won't taste the same, and will probably be pretty disgusting. The butter after the corn pops serves mainly as taste enhancer. If you don't like butter, it is not a necessary part of the corn.
The problem is that when popping corn in electrical machines it turns out very dry and the salt falls off. This is why I reverted to a pot on the stove... Using very little oil is enough, and it tastes great even without the butter at the end.