Well, I can't think of a way without a script, but the little script I created for this purpose is event driven so it shouldn't be a problem.
http://rmrk.net/index.php/topic,24897.0.htmlPaste it between Materials and Main, and it only works for Game Overs in Battle. Basically it calls a common event instead of going to the Game Over scene. To set which common event it calls, you can use the code in the call script:
$game_system.gameover_ce_id = ID of common event
You can set the default by changing:
@gameover_ce_id = 0 # Default Common Event I
the 0 to whatever common event ID you want. 0 means it goes to the gameover scene.