I see no reason to use the bomber for SBR’s except when you are losing badly and you need to gamble. It is much more useful as a long range 4 based out of Southern Europe so it can threaten just about anything worth killing.
YES! the BOM is extremely versatile. I use it mainly in North Africa to support operations there and to give naval operations a boost. It never hurts to use it as ground support for a while and then when Germany starts to get a little fatter or thinner in the IPC realm then think about using it as an SBR. I’ve also found that using it in conjunction with submarines, depending on the game, is a great deterent to the US player wanting to use TRNs to invade N. Africa.